Single Consistent Timeline

Tag Area: Timeline Model
Short Story

Time’s Arrow


Barton and Davis, assistants to Professor Fowler, are on an archaeological dig when a physicist sets up camp next door and speculations abound about viewing into the past—or is it only viewing? —Michael Main
The discovery of negative entropy introduces quite new and revolutionary conceptions into our picture of the physical world.
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  • Eloi Honorable Mention
  • Science Fiction
  • Definite Time Travel
Comic Book

Weird Fantasy #13 (1950)

Only Time Will Tell


Start by reading Heinlein’s “By His Bootstraps” (1941), and then read this one. You’ll enjoy both and stretch your mind around the first ex nihilo idea that we’ve spotted in comic books. Note that the half blueprint itself does have an origin, and you can trace it’s timeline from that origin to the past and back again. It’s only the concept expressed in the blueprint that has no origin. —Michael Main
—are the same piece!
Sitting at a lab bench and twirling knobs on a panel, a scientist talks about a
                brain on the bench in front of him.
  • Eloi Bronze Medal
  • Science Fiction
  • Audience: YA and Up
  • Definite Time Travel
Comic Book

Weird Fantasy #14 (1950)

The Trap of Time!


Physicist Don Hartley has a plan to save his beloved Adele, who died in a car crash on a hot July night. —Michael Main
You will be tampering with tremendous natural forces, Don! It is dangerous! You may unleash some awful catastrophe!
Three startled aliens look down at the Earth while all of Europe erupts in a
                giant mushroom cloud explosion.
  • Science Fiction
  • Audience: YA and Up
  • Definite Time Travel
Novelette

Paycheck


Apparently, Jennings agreed to work as a specialized mechanic for two years at Rethrick Construction, having his memory wiped at the end in return for 50,000 credits—except instead of a bag full of credits, the memory-wiped Jennings is left holding a bag of seven trinkets and no idea why he would have agreed to such a thing. —Michael Main
But the big puzzle: how had he—his earlier self—known that a piece of wire and a bus token would save his life? He had known, all right. Known in advance. But how? And the other five. Probably they were just as precious, or would be.
Black-and-white pointillism illustration of two policemen running down a street
                with skyscrapers on the horizon.
  • Science Fiction
  • Definite Time Travel
Comic Book

Journey into Mystery #13

What Harry Saw


If you (or Harry, of course) should happen to see your wife with another man in your chronoscope, be careful about how you proceed. —Michael Main
I turned on the futurescope and saw her kissing Edmund, a man I work with!
No image currently available.
  • Weird Fiction
  • Audience: YA and Up
  • Debatable Time Travel
Comic Book

Journey into Mystery #16

The Question!


Computer genius and jealous husband Paul Jessup builds a mechanical brain that can answer any question about the future.  —Michael Main
The brain can foretell events for approximately 24 hours in the future!
No image currently available.
  • Weird Fiction
  • Audience: YA and Up
  • Time Phenomena
Comic Book

Journey into Mystery #42

The Panhandler


One of the six time travelers who’ve arrived to intervene in Doug Cotter’s panhandling life just seems to know far too much about Doug’s private life. —Michael Main
You haven’t a prison record yet. But you will have . . . unless you let us help you!
No image currently available.
  • Weird Fiction
  • Audience: YA and Up
  • Definite Time Travel
Comic Book

Adventure into Mystery #8

The Night of March 5th


The machine that spy Bruno Ames steals takes him one year into the future where the Daily Bugle tells him his boss has been sentenced to life in prison. —Michael Main
I just left Novitch this morning! How could he have been arrested, tried, convicted and sentenced, all in one day?
No image currently available.
  • Weird Fiction
  • Audience: YA and Up
  • Debatable Time Travel
Short Story

Time Travel Inc.


I found this in one of three old sf magazines that I traded for at Denver’s own West Side Books. (Thank you, Lois.) Both the title and the table-of-contents blurb (They wanted to witness the Crucifixion) foreshadow Moorcock’s “Behold the Man,” although the story is not as vivid. —Michael Main
Oh . . . The Crucifixion. You want to witness it, of course—
An angry man with tubes connected to his temples grasps two fistfuls of other
                tubes and wires.
  • Science Fiction
  • Definite Time Travel
Short Story

“—All You Zombies—”


A 25-year-old man, originally born as an orphan girl named Jane, tells his story to a 55-year-old bartender who then recruits him for a time-travel adventure. —Michael Main
When I opened you, I found a mess. I sent for the Chief of Surgery while I got the baby out, then we held a consultation with you on the table—and worked for hours to salvage what we could. You had two full sets of organs, both immature, but with the female set well enough developed for you to have a baby. They could never be any use to you again, so we took them out and rearranged things so that you can develop properly as a man.
A man wearing only a skirt stands on a spaceship while firing a ray gun upward
                at another ship.
  • Science Fiction
  • Definite Time Travel
Novelette

Time Patrol 4

The Only Game in Town


While on a two-man mission to stop a Mongol party from exploring North America in AD 1280, Patrolman John Sandoval gets a cracked skull, which leaves Manse Everard to figure out a way to save John and the mission while waxing philosophical about time travel and the Time Patrol. —Michael Main
Thin lightnings winked from above. The cloven air boomed behind them. He felt a chill, deeper than the night cold. But he eased his pace. There was no more reason for hurry.
No image currently available.
  • Undetermined
  • Definite Time Travel
Novelette

Time Patrol 4

The Only Game in Town


While on a two-man mission to stop a Mongol party from exploring North America in AD 1280, Patrolman John Sandoval gets a cracked skull, which leaves Manse Everard to figure out a way to save John and the mission while waxing philosophical about time travel and the Time Patrol. —Michael Main
Thin lightnings winked from above. The cloven air boomed behind them. He felt a chill, deeper than the night cold. But he eased his pace. There was no more reason for hurry.
No image currently available.
  • Undetermined
  • Definite Time Travel
TV Episode

The Twilight Zone (v1s02e10)

A Most Unusual Camera


Petty thieves Chet and Paula Diedrich are frustrated, angry, and in a bickering mood when they find nothing but cheap junk in the 400-lbs. of stuff they lifted from a curios store in the middle of the night, . . . until that boxy looking camera with the indecipherable label—dix à la propriétaire—produces a photo of the immediate future. —Michael Main
Yeah, it takes dopey pictures—dopey pictures like things that haven’t happened yet, but they do happen.
Jean Carson (as Paula Diedrich) holds up an unusual, boxy camera.
  • Weird Fiction
  • Debatable Time Travel
Short Film

La jetée

  • The pier
  • La Jetée
  • written and directed by Chris Marker
  • (at movie theaters, France, 16 February 1962) [Accessed at Youtube on 28 February 2022.]

In a world made uninhabitable by the Third World War, a prisoner is chosen as being the only person with vivid enough memories of the past to travel through time and return with salvation.

This 28-minute photo montage with about 1,200 words of narration has a nice seed of an idea, but I find it insulting to other talented filmmakers that Time magazine ranked this sketch of a film as #1 in their 2010 list of best time travel movies. —Michael Main
Tel était le but des expériences : projeter dans le Temps des émissaires, appeler le passé et l’avenit au secours du présent.
translate Such was the purpose of the experiments: to project emissaries into Time, to summon the Past and the Future to the aid of the Present.
A grid of 16 photos from Chris Marker
  • Science Fiction
  • Experimental
  • Definite Time Travel
Feature Film

The Time Travelers

  • written and directed by Ib Melchior
  • (at movie theaters, USA, 29 October 1964)

Using their time viewer, three scientists see a desolate landscape 107 years in the future, at which point the electrician realizes that the viewer has unexpectedly become a portal. All four jump through, only to have the portal collapse behind them, whereupon they are chased on the surface by Morlockish creatures who are afraid of thrown rocks, and they meet an advanced, post-apocalyptic, underground society that employs androids and is planning a generation-long trip to Alpha Centauri.

The film draws in at least four important additional time travel tropes: suspended animation, a single nonbranching, static timeline (with the corresponding inability to go back and change it), experiencing the passage of time at different rates, and a trip to the far future. And according to the SF Encyclopedia, the film was originally conceived as a sequel to the 1960 film of The Time Machine. —Michael Main
Isn’t it obvious? The war did happen. You never did go back with your warning.
A monster chases people across a rocket field--along with three other scenes
                from the future before it happens!
  • Science Fiction
  • Definite Time Travel
Novel

Jessamy


Visiting with the caretaker of an empty old mansion, orphaned Jessamy emerges from the nursery closet into the world of 1914 when her namesake lived in the same house and left her adventures and a mystery to be solved again in the present. —from publicity material
Somehow I’ve become another Jessamy in a different time! It must be a different time because of the clothes. Nobody wears long skirts like Matchett and Aunt now—I mean that—oh, I don’t know what I mean!
A young girl with long black hair and a red bow kneels at the edge of a
                courtyard.
  • Fantasy
  • Audience: Children
  • Undetermined Time Travel
Novella

Dragonriders of Pern 1B

Dragonrider


By the time that Lessa of Ruatha Hold becomes Weyrwoman of the only remaining dragon weyr, the end of all Pern seems imminent since a single weyr is not enough to fight off the falling threads from the Red Star.

“Dragonrider,” which was first released as a two-part Analog serial (December 1967 and January 1968), was the second Pern story, appearing after the shorter novella “Weyr Search” (October 1967). Together, the two stories formed the first Pern novel, Dragonflight (1968). When the online version of the ITTDB was in a nascent stage, my friend Allison Thompson-Brown reminded me that the dragons can travel to a new when as well as a new where, and that time travel first appeared near the end of “Dragonrider.” Time travel on Pern occurs in a single, static timeline, so the dragons and their riders can never change anything known to be certain in the past. —Michael Main
“Dragons can go between times as well as places. They go as easily to a when as to a where.”

Robinton’s eyes widened as he digested this astonishing news.

“That is how we forestalled the attack on Nerat yesterday morning. We jumped back two hours between times to meet the Threads as they fell.”
A brontosaurus-like dragon and its human rider lifts from the ground into a
                dragon-filled sky.
  • Eloi Gold Medal
  • 1969 Nebula
  • Science Fiction
  • Audience: YA and Up
  • Definite Time Travel
Novel

Dragonriders of Pern 1 [fix-up]

Dragonflight


By the time that Lessa of Ruatha Hold becomes Weyrwoman of the only remaining dragon weyr, the end of all Pern seems a possibility since a single weyr is not enough to fight off the falling threads from the Red Star.

Allison Thompson-Brown reminded me that dragons can go when as well as where, and the travel through time always results in a stable time loop, so that dragon travel can never change anything known to be certain in the past. The actual whening part (or going between time, as it’s called) didn’t come until the third installment (Part 2 of “Dragonrider” in the Jan 1968 Analog), but I’ll date the concept back to the slightly earlier appearance of the first story (“Weyr Search” in Oct 1967). The two stories were fixed up into the first Pern novel, Dragonflight, in July of 1968, but it was another ten years before I discovered it.
“Dragons can go between times as well as places. They go as easily to a when as to a where.”

Robinton’s eyes widened as he digested this astonishing news.

“That is how we forestalled the attack on Nerat yesterday morning. We jumped back two hours between times to meet the Threads as they fell.”
A woman in a diaphonous dress, blowing up around her waist, rides an
                evil-looking dragon, side-saddle through a purple sky.
  • Science Fiction
  • Definite Time Travel
Novelette

The Voyages of Ijon Tichy 20

Podróż dwudziesta

  • Journey twenty
  • The Twentieth Voyage
  • by Stanisław Lem
  • in Dzienniki gwiazdowe, expanded third edition, by Stanisław Lem, (Czytelnik, 1971)

After the time mish-mash of Ijon Tichy’s seventh voyage, it wasn’t clear whether Ijon would ever ply the channels of time again, but here he is, traveling back in time to persuade himself to go forward in time and take up the helm of THEOHIPPIP—a.k.a. Teleotelechronistic-Historical Engineering to Optimize the Hyoerputerized Implementation of Paleological Programming and Interplanetary Planning. It takes a few attempts for older Ijon to convince younger Ijon to head to the future on a one-man chronocykl, but when he does, the younger Ijon begins the unexpectedly hard task of righting history’s wrongs. As a sophisticated time traveler yourself, you’ll spot what’s happening early on, while you also get a tour of history from the formamtion of the Solar System to the extinction of the dinosaurs and the paintings of Hieronymus Bosch. You’ll also recognize the fun Lem has at the expense of the bureaucracies of mid-20th-century Poland. —Michael Main
Zresztą Bosch nie powstrzymał się od niedyskrecji. W „Ogrodzie uciech ziemskich,” w „piekle muzycznym” (prawe skrzydło tryptyku) stoi w samym środku dwunastoosobowy chronobus. I co miałem z tym robić?
translate Even so, Bosch couldn’t refrain from certain indiscretions. In the “Garden of Earthly Delights,” in the very center of the “Musical Hell” (the right wing of the triptych), stands a twelve-seat chronobus. Not a thing I could do about it.
Pen-and-ink drawing of a broomstick time machine with a bicycle saddle and
                handle bars, a.k.a. the chronocycle.
  • Science Fiction
  • Comedy
  • Definite Time Travel
Novelette

“Willie’s Blues”


A music historian travels back to the 1930s to uncover the real story of how Willie Turnhill rose from an extra in the Curry Band to tenor sax virtuoso ever. —Michael Main
He thinks of me now as the one person who’ll be able to say who’s the original and who’s the plagiarist when “the other guy” does eventually turn up!
A radio-telescope in front of a futuristic skyline and a bulbous rocket
                launching vertically into an orange sky.
  • Eloi Bronze Medal
  • Science Fiction
  • Music and Musicals
  • Definite Time Travel
Feature Film

Star Trek IV

Star Trek IV: The Voyage Home


As the brave crew of the Enterprise are returning to Earth on a Klingon Bird of Prey to stand trial for the events of the previous movie, Spock determines that Earth’s demise is imminent unless they can return to 1986 and retrieve a humpback whale (which they proceed to do).

I saw this in the theater with Deb Baker and Jon Shultis during a winter trip to Pittsburgh for a small computer science education conference. —Michael Main
McCoy: You realize that by giving him the formula you’re altering the future.
Scotty: Why? How do we know he didn’t invent the thing?
Headshots of the Enterprise crew overlook a Klingon ship passing over the
                Golden Gate bridge.
  • Eloi Silver Medal
  • Science Fiction
  • Comedy
  • Definite Time Travel
Novelette

from The Teacher of Symmetry Cycle

Фотография Пушкин (1799–2099)

  • Fotografiya Pushkin (1799–2099)
  • Pushkin’s photograph (1799–2099)
  • Pushkin’s Photograph (1799–2099)
  • by Андре́й Би́тов
  • Znamia, January 1987

In 1985, an author has visions of a time traveler named Igor from 2099. The traveler is being sent by his comrades in the domed city of St. Petersburg back to the 19th century, where he is tasked with capturing images and audio of motherland’s supreme father of poetry, Alexander Sergeyevich Pushkin.

Note: A dissertation by Gulius Natalya Sergeevna notes that this story is part of Bitov’s Teacher of Symmetry Cycle, which consisted of a series of avant-garde stories purportedly written by an obscure Englishman named A. Tired-Boffin and loosely translated to Russian by Bitov. The English version of “Fotografiya Pushkin (1799–2099)” was said to have been called “Shakespeare’s Photograph” (or possibly “Stern’s Laughter” or “Swift’s Pill”), and presumably it was about Shakespeare rather than Pushkin.

Sergeevna explains that all this artistic mystification was part of an extensive footnote to “Fotografiya Pushkin (1799–2099),” but up in the ITTDB Citadel, we’ve yet to track down the footnote. Perhaps it was part of the 1987 publication in Znamia, or maybe it did not appear until the story was published along with the rest of the cycle in Bitov’s 1988 collection, Chelovek v peyzazhe. It is not listed in the table of contents of "]Prepodavatelʹ simmetrii(2008), which was translated to English as Symmetry Teacher (2014). —Michael Main
. . . мы сможем в будущем, и не таком, господа-товарищи, далеком, заснять всю жизнь Пушкина скрытой камерой, записать его гол . . . представляете, какое это будет счастье, когда каждый школьник сможет услышать, как Пушкин читает собственные стихи!
translate . . . we will be able in the future, and, gentlemen-comrades, not such a distant one, to photograph Pushkin’s entire life with a hidden camera, record his voice . . . imagine how wonderful it will be when every schoolboy will be able to hear Pushkin read his own poetry!
Journal cover with red text on a white background.
  • Science Fiction
  • Comedy
  • Definite Time Travel
Feature Film

Bill & Ted I

Bill and Ted’s Excellent Adventure


The Two Great Ones, Bill S. Preston, Esq., and Ted “Theodore” Logan, are the subjects of time-traveler Rufus’s mission, but instead they end up using his machine to write a history report to save their band, Wyld Stallyns. —Michael Main
Most excellent!
Alex Winter (A K A Bill) and Keanu Reeves (A K A Ted) sit on top of a phone
                booth crammed with Napoleon and other historical figures in orbit around Earth.
  • Eloi Silver Medal
  • Science Fiction
  • Comedy
  • Audience: YA and Up
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 1

Dinosaurs before Dark


Eight-year-old prospective scientist Jack and his imaginative little sister Annie discover a tree house full of books, the first of which magicks them into the age of reptiles with a friendly Pteranodon they call Henry, a not-so-friendly T. Rex, and a drove of other dinosaurs. —Michael Main
“Wow,” whispered Jack. “I wish we could go to the time of Pteranodons.”

Jack studied the picture of the odd-looking creature soaring through the sky.

“Ahhh!” screamed Annie.

“What?” said Jack.

“A monster!” Annie cried. She pointed out the tree house window.
A young boy with glasses and a backpack rides a flying Pteranodon, while a
                young girl runs below.
  • Eloi Honorable Mention
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 2

The Knight at Dawn


Cautious Jack and his gung-ho sister Annie have their second adventure through time when a book in the magic tree house sends them to the age of knights and chivalry. For the most part, they’re passive observers, but when they return back to Frog Creek, Pennsylvania, Jack discovers another clue about the magic person who may have built the treehouse. —Michael Main
“My magic wand!” Annie said, waving the flashlight. “Get down. Or I’ll wipe you out!”
Young Jack and his younger sister Annie sit in front of a knight on his horse
                with a castle in the background.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 3

Mummies in the Morning


Jack and Annie go to the pyramids in Egypt where they help the thousand-year-old ghost of Queen Hupeti find her way to the next life. If this info from the queen is correct, that places them sometime in the period of 1500 BC to AD 700. They also ran into a tomb robber, the likes of which were a problem even in Ancient Egypt. —Michael Main
“For a thousand years,” said the ghost-queen. “I have waited for help.”
Young Jack and his younger sister Annie gasp at a mummie in an open coffin.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 4

Pirates Past Noon


Jack and Annie are thrown into a pack of pirates in the Caribbean who are intent on finding Captain Kidd’s treasure. —Michael Main
“No one escapes Cap’n Bones!” he roared. His breath was terrible.
Young Jack and his younger sister Annie race up a sandy tropical beach as three
                pirates land behind them.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 5

Night of the Ninjas


The tree house finally returns to Frog Creek, but with only a note from Morgan⁠]] pleading for help, so the kids end up following a clue to medieval Japan where they find the first of four items that they’ll need to save Morgan. —Michael Main
“The moonstone will help you find your missing friend,” the master said.
A hooded ninja in all black garb pulls a resistant young Jack and his younger
                sister Annie by the wrists.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 6

Afternoon on the Amazon


Jack and Annie travel to the Amazon, encountering army ants, snakes, crocodiles (does the Amazon have crocodiles?), a jaguar, and a monkey who gives them the second object they need to collect in their quest to save Morgan⁠]].

This is the first tree house story where the kids’ desitination might be in the present time, although there is still some time travel since the tree house always returns to the same time that it left, presumably so The Parents don’t worry. In any case. we’ve decided to mark this type of possibly-present-day story as having debatable time travel to distinguish this kind of destination from those in the past or future. —Michael Main
Jack nodded. Now he remembered. The ninja master said they wouldn’t be able to find the Pennsylvania book until they had found what they were looking for.
A crocodile gapes at frightened young Jack and his younger sister Annie in a
                dugout canoe.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Feature Film

12 Monkeys


In the year 2035, with the world devastated by an artificially engineered plague, convict James Cole is sent back in time to gather information about the plague’s origin so the scientists can figure out how to fight it. —Michael Main
If you can’t change anything because it’s already happened, you may as well smell the flowers.
The faces of Bruce Willis (as old James with one red eye), Brat Pitt (as young
                James), and Madeline Stowe (as Kathryn) stare out of the shadows.
  • Eloi Silver Medal
  • Science Fiction
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 7

Sunset of the Sabertooth


The tree house takes Jack and Annie back to the stone age where they run into Cro-Magnon man, a cave bea, a sabertooth tiger, a mammoth, a woolly rhino, and other prehistoric beasties before returning home with the third magic object to rescue Morgan. —Michael Main
She stroked the mammoth’s giant ear. “Bye, Lulu. Thank you,” she said.
From atop a small cliff, a sabertooth tiger roars down at young Jack and
                Annie.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 8

Midnight on the Moon


For the first time, the tree house takes Jack and Annie to the future and off the Earth! —Michael Main
Jack nodded. “The book says the moon base was built in 2031,” he said. “So this book was written after that! Which means this book os from the future!.”
With the Earth hanging in the sky, young Jack and Annie bounce across the
                surface of the moon in their spacesuits.
  • Science Fiction
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 9

Dolphins at Daybreak


The tree house transports the kids to a coral reef somewhere in the South Pacific or Indian ocean where a mini-submarine gives them a tour of the wildlife, including dolphins and giant clams. We’ve marked the story as having debatable time travel since the only certain time travel comes from returning to Frog Creek, Pennsylvania, at the moment of their departure. —Michael Main
“You must show that you know how to do research,” said Morgan. “And show that you can find answers to hard questions.”
With the sun hanging low in a purple sky behind them, young Jack and Annie ride
                two dolphins over the waves.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Short Story

Standing Room Only


On Good Friday in 1865, Anna Surratt pines for one of her mother’s boarders—a certain John Wilkes Booth—not knowing anything of Booth’s plans for the evening, her mother and brother’s possible role in those plans, or the reason for the legion of odd tourists packing the streets in the nation’s capital around Ford’s Theatre. —Michael Main
“It didn’t seem a good show,” Anna said to Mrs. Streichman. “A comedy and not very funny.”

Mrs. Streichman twisted into the space next to her. “That was just a rehearsal. The reviews are incredible. And you wouldn’t believe the waiting list. Years. Centuries! I’ll never have tickets again.” She took a deep, calming breath. “At least you’re here, dear. That’s something I couldn’t have expected. That makes it very real. [. . .]”
A young woman in a red dress sits outside, playing a lute, surrounded by living
                gargoyles that resemble satyrs and griffins.
  • Science Fiction
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 10

Ghost Town at Sundown


Jack and Annie head back to the Old West where they meet a piano-playing ghost, cattle rustlers, and a cowboy who’s a budding writer. —Michael Main
“Slim, you should write your book,” said Annie.
Dressed as young cowboys on a street in an old west town, a startled Jack and
                Annie look into the distance.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 11

Lions at Lunchtime


Jack and Annie travel to the plains of Africa—probably with no time travel apart from returning to their exact moment of departure—where among the lions and giraffes, they solve the third of four riddles on their way to becoming Master Librarians. —Michael Main
Jack watched as she hopped off the ladder. Then she started to walk through the tall grass, between the zebras and giraffes.
On an African savannah. Young Jack and Annie stumble upon a lion and his
                family.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Early Chapter Book

The Magic Tree House 12

Polar Bears Past Bedtime


In the Arctic, a native seal-hunter and the animals of the north show Jack and Annie their way of life while the kids solve the final riddle in their quest to join the Ancient Society of Master Librarians. —Michael Main
The tree house was on the ground. There were no trees and no houses, only an endless field of ice and snow.
Young Jack and Annie, along with a polar bear standing tall, stare up at an
                aurora borealis.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Early Chapter Book

The Magic Tree House 13

Vacation under the Volcano


Jack and Annie take on their first mission as members of the Ancient Society of Master Librarians: retreiving a lost scroll from Pompeii! —Michael Main
“This story was in a library in a Roman town. I need you to get it before thelibrary becomes lost.”
Dressed in ancient Roman garb, young Jack and Annie flee in the streets of
                Pompeii as Vesuvius erupts behind them.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 14

Day of the Dragon King


In ancient China, Jack and Annie meet the heavenly beings behind the legend of the Silk Weaver and the Cowherd, and they rescue the first written book that tells their tale. —Michael Main
“Give a message to the silk weaver. You will see her at the farmhouse,” said the young man. “Tell her to meet me here at twilight.”
Dressed in ancient Chinese garb, young Jack and Annie confront the first
                Chinese emperor.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 15

Viking Ships at Sunrise


Another book for Jack and Annie to rescue, this time a collection of Celtic tales from the 9th century AD. —Michael Main
The serpent’s neck was as tall as a two-story building. Its green scales were covered with sea slime.
Alone in a small Viking ship with a dragon masthead, young Jack and Annie seem
                worried about reaching the shore through rough waves.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 16

Hour of the Olympics


Jack and Annie meet Plato and learn about the treatment of women in ancient Greece, while also rescuing a fourth lost book from history for Morgan’s library —Michael Main
At that moment, Plato returned. With him was a young woman dressed in a long tunic with a colored border. She was holding a scroll.
Dressed in ancient Greek garb, young Jack and Annie drive a horse and chariot
                down a dusy street.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 17

Tonight on the Titanic


A note from Morgan introduces Jack and Annie to a little brown dog named Teddy who needs three gifts to free him from a spell. Then they all head back to the Titanic to find the first gift (but not to save the sinking ship). —Michael Main
“Well, at least that’s good,” said Jack. “The ship won’t sink, even if it is lost.”
Young Annie clutches a small tan dog beside Jack at the prow of the Titanic.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 18

Buffalo before Breakfast


Jack and Annie are given a second gift for Teddy from the legendary White Buffalo Woman of the Lakota. —Michael Main
. . . I got in the way of the buffalo. I couldn’t escape. So I held up my hands and shouted, ‘Stop!’ Then, out of nowhere, a beautiful lady in a white leather dress came to help me.”
With Native American tents behind them, young Jack and Annie (as well as their
                small dog) run from a charging buffalo.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 19

Tigers at Twilight


Jack, Annie, and their spellbound dog Teddy face tigers and other wildlife in India. —Michael Main
“When you saved the tiger, you saved all of him,” said the blind man. “You saved his graceful beauty—and his fierce, savage nature. You cannot have one without the other.”
As an Indian tiger pounces, young Jack and Annie swing away on vines.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Early Chapter Book

The Magic Tree House 20

Dingoes at Dinnertime


The little dog, Teddy, needs one more gift before the spell he is under can be broken, so Jack and Annie take him to the Australian outback where the final gift comes from a mama kangaroo. —Michael Main
But at least I got to have exciting adventures as a dog!
Wearing Aussie slouch hats, young Jack and Annie (together with their little
                dog, a kangaroo, and a joey) face down three growling dingoes.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Early Chapter Book

The Magic Tree House 21

Civil War on Sunday


Morgan sends a plea for help to Jack and Annie, asking them to find four kinds of writing that are needed to save Camelot, which starts the kids on their next trip, back to the American Civil War where they volunteer at a Union field hospital. —Michael Main
We’d like to volunteer as nurses.
Young Jack and Annie help an injured Union drummer boy across a battlefield.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 22

Revolutionary War on Wednesday


In their second quest to find a sample of writing to save Camelot, Jack and Annie find themselves at the start of the American Revolution as Washington and his men prepare to cross the Delaware. —Michael Main
“Yes! And you have to keep going for our sake,” said Annie. “For the sake of the future children of America, sir.”
George Washington stands at the prow of a small boat in icy water, while young
                Jack and Annie clutch a Revolutionary War flag behind him.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 23

Twister on Tuesday


Jack and Annie go to a one-room schoolhouse on the Kansas prairie where they save everyone from a twister and find the third piece of writing to save Camelot. —Michael Main
Suddenly, the schoolhouse door blew off its hinges! It went flying through the air!
Dressed as pioneers, young Jack and Annie run from a tornado on the prairie.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 24

Earthquake in the Early Morning


Jack and Annie help a man rescue old, treasured books after the Great San Francisco Earthquake and before the fire. And with their fourth piece of writing, they finally get to visit Camelot! —Michael Main
Jack slowly stood up. His legs felt wobbly. As he brushed off his pants, the deep rumbling came again—louder than before.
Young Jack and Annie reach for each other across a gaping fissure in the middle
                of a brick street with burning buildings behind them.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 1*

Christmas in Camelot


On Christmas Eve, Jack and Annie’s tree house transports them to King Arthur’s castle in Camelot. They arrive to find that all is not well in Camelot, Merlin has been banned, and all magic use is forbidden. Many of the bravest knights have been lost on a mysterious quest to the Otherworld. The Christmas feast is interrupted by a knight, who sets a challenge to find the knights and break the curse. He demands to know “Who will go?” Annie, naturally, accepts. She and Jack set out on a quest to the Otherworld, to bring back magic and joy to Camelot. —based on fandom.com
Draped in a flowing red cape, young Jack clings to his sister Annie who clings
                to the nect of a white, flying stag with a castle in the background.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Novella

Ransom


Time travel agent Maks Hamilton is told by mysterious kidnappers that if he ever wants to see his own son again, he must travel back three centuries—just before the Troubles—to abduct another boy.

Despite the characters’ belief that they can change history, up in the ITTDB Citadel we all agreed that the characters are an unreliable source and this story actually lives in a carefully crafted single static timeline along with a nice bootstrap paradox. —Michael Main
I want you to bring someone from the past to the present—someone who would otherwise die only a few hours afterward. Surely that’s possible.
A spiral galaxy looms large behind a nighttime desert scene.
  • Eloi Silver Medal
  • Science Fiction
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 25

Stage Fright on a Summer Night


The two young tree house time travelers go to the Globe Theatre in Shakespearian times where they play the parts of two fairies in A Midsummer Night’s Dream and discover their first kind of magic without wands. —Michael Main
“’Tis,” said Wil “The queen pretends to be young and beautiful. Just as you pretended to be a boy, and the bear pretended to be an actor. You see, all the world’s a stage.”
Dressed in colorful green garb, young Jack and Annie take bows on a
                Shakespearian stage.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 26

Good Morning, Gorillas


Jack and Annie travel to an African rain forest, encountering a young gorilla before being separated from each other for the night. But all turns out well when they find each other, find a family of bigger gorillas, and find a second kind of magic without wands.

As with several of the Magic Tree House stories, the kids’ destination in this one might be in the present time. —Michael Main
But he couldn’t find the magic. He couldn’t find the words that finished the rhyme. Worst of all, he couldn’t find Annie.
A gorilla pounds his chest in a lush jungle, startling young Jack and Annie.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Early Chapter Book

The Magic Tree House 27

Thanksgiving on Thursday


Jack and Annie visit the first Thanksgiving in Plymouth, Massachusetts, where they learn little things about the pilgrims’ way of life and big things about the magic of community and being kind. —Michael Main
Be kind to those who feel different and afraid.
Dressed as pilgrims, young Jack and Annie carry a large pumpkin and a basket of
                gourds and corn down a dirt road in front of colorful autumn trees.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 28

High Tide in Hawaii


When Jack and Annie visit Hawaii before any Western influences, Annie is the more natural surfer. They also discover a fourth kind of magic in the everyday world, earning the title of Magicians of Everyday Magic. —Michael Main
Jack took a deep breath. “I’d like to read a little about surfing first,” he said. He put his board down and pulled out the research book.
With leis around their necks, young Jack and Annie surf on a smooth wave.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novel

Children of the Red King #2

Charlie Bone and the Time Twister


In 1916, young Henry Yewbeam’s lily-livered cousin tricks him into staring at the Time Twister marble, sending Henry ninety years into the future, where the cousin is still alive at over a hundred years and just as lily-livered as ever. The other children of time, some of whom are endowed with magic powers from an ancestor, are neatly divided into nice kids and horrid kids. There is never a doubt about which is which, although there are plenty of doubts about whether a rational model of time travel underlies the two (or possibly three) time travel instances. Please see the book’s tags for a short discussion of the issues. —Michael Main
“People can’t go back. You can’t change history Think about it! When my father was five years old, he lost his brother. It changed his life. He became an only child, grew up as an only child. All his memories are of being an only one. You can’t change that now, can you?”

“No,” Charlie said quickly. “I’m sorry.”

His uncle hadn’t finished. “Henry’s parents mourned him, just as they mourned poor little Daphne. James was their only child and, as a result, he was probably spoiled. His father died in the war and his mother left everything to him, including her lovely cottage by the sea. You can’t change that, can you?”
A startled boy looks at another young lad who reaches for a crystal ball
                containing a mountain scene, with a sabretooth tiger or other large cat.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 2*

Haunted Castle on Hallow's Eve


In their magic tree house, Jack and Annie are again transported to King Arthur’s realm, where invisible beings, giant ravens, and mistaken magic spells have a duke’s castle in an uproar on Halloween night. —based on fandom.com
Young Annie and Jack stare up at turret of a spooky castle with a full moon in
                the night sky behind.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Feature Film

Paycheck


Unlike Philip K. Dick’s story of the same name, the film has only viewing the future rather than physical time travel such as the story’s time scoop’s retrieval capability. Also, the film omits Dick’s dystopian police state and his theme of fate via what appears (in the story) to be a single static timeline. On the other side of the coin, the filmmakers made an epic car chase scene, took Jenning’s female sidekick off the sidelines, and attempted to massively raise the stakes via some questionable choices by Jennings. —Michael Main
Shorty: Look, if we know anything, we know that time travel's not possible. Einstein proved that. Right?
Michael: Time travel, yes. But Einstein was very clear that he believed time viewing, theoretically, could be accomplished.
A man runs toward us from out of an exploding jigsaw puzzle of a train tunnel.
  • Science Fiction
  • Debatable Time Travel
Novelette

Magic Tree House: Merlin Mission 3*

Summer of the Sea Serpent


Jack and Annie travel in their magic tree house to the land of the mystical selkies to seek a magical sword for Merlin. —based on fandom.com
Stranded on a small rock in a rough sea, Annie and Jack bravely hoist a heavy
                sword toward a menacing sea serpent.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Feature Film

Harry Potter 3

Harry Potter and the Prisoner of Azkaban


Compared to the books, I find the Harry Potter movies drawn-out and boring, but I rewatched this one during the pandemic and found that I enjoyed all three thirteen-year-olds as well as Hagrid, Sirius, Snape, Lupin, and—most of all—the fact that the filmmakers didn’t blithely destroy the single static timeline out of a misplaced sense that time travelers are meant to change the timeline willy-nilly. —Michael Main
Hang on! That’s not possible. Ancient Runes is at the same time as Divination. You’d have to be in two classes at once.
Daniel Radcliffe (as Harry Potter), Emma Watson (as Hermione Granger), and
                Rupurt Grint (as Ron Weasley) are watching something that spooks Harry, fascinates
                Hermione, and terrifies Ron.
  • Fantasy
  • Audience: YA and Up
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 4*

Winter of the Ice Wizard


Jack and Annie are joined by Teddy and Kathleen as they travel to the snowy Land-Behind-the-Clouds, where they search for the eye of the Ice Wizard and attempt to help Merlin and Morgan. —based on fandom.com
Warmly dressed Annie and Jack climb icy steps toward a white-bearded wizard on
                a throne, garuded by two white wolves.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Novelette

Magic Tree House: Merlin Mission 5*

Carnival at Candlelight


While on a mission to prove to Merlin that they can use magic wisely, Jack and Annie travel to eighteenth-century Venice, Italy, to save the city from disaster. —based on fandom.com
On the back of a winged, golden lion, Annie holds a lantern with one hand and
                clings to her brother Jack with the other.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 6*

Season of the Sandstorms


Guided by a magic rhyme, Jack and Annie travel to ancient Baghdad on a mission to help the caliph disseminate wisdom to the world. —based on fandom.com
Dressed in Arab headdresses and long, lightweight robes, young Jack and Annie
                perch on two camels marching across desert sands.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 7*

Night of the New Magicians


Jack and Annie visit the Paris World’s Fair of 1889 in an effort to protect four scientific pioneers from an evil sorcerer. —based on fandom.com
Dressed as 19th-century children, young Annie and Jack ride a
                bicycle-built-for-two through the Paris night sky.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 8*

Blizzard of the Blue Moon


The magic tree house carries Jack and Annie to New York City in 1938 on a mission to rescue the last unicorn. —based on fandom.com
Bundled up warmly, young Jack and Annie ride a white unicorn through a
                snowstorm.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 9*

Dragon of the Red Dawn


When Merlin is weighed down by sorrows, Jack and Annie travel back to feudal Japan to learn one of the four secrets of happiness. —based on fandom.com
Standing on the edge of a cliff in the clouds, frightened Annie and Jack face a
                golden dragon breathing blue fire.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Novelette

Magic Tree House: Merlin Mission 10*

Monday with a Mad Genius


Jack and Annie travel 500 years back in time to Florence, Italy, and spend a day helping Leonardo da Vinci in the hope of learning another secret of happiness. —based on fandom.com
Wearing large wings and startled looks, young Annie and Jack fly high over the
                Cathedral of Santa Maria in Florence.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 11*

Dark Day in the Deep Sea


When Jack and Annie join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures. —based on fandom.com
Young Annie and Jack struggle underwater in the grip of a giant squid!
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novel

Artemis Fowl, Book #6

Artemis Fowl and the Time Paradox

  • by Eoin Colfer
  • (Hyperion Books for Children, July 2008)

When fourteen-year-old genius Artemis Fowl realizes that the only cure for his mother’s case of Spelltropy lies in a species of lemur that Artemis made extinct eight years ago, there is only one solution: Grab your 80-year-old, elfin-police-captain-friend Holly Short and trick her into traveling back in time to stop your formerly evil, ten-year-old self from killing off the last of the all-cure lemurs.

Author Eoin Colfer does a masterful job presenting a single nonbranching, static timeline, complete with three consistent causal loops (further described in our tag notes for this story). But really, Eoin, you missed the shuttle on “the kiss”! With the help of N°1, Artemis can time travel, so if you're intent on his first romantic kiss coming from Holly Short, couldn’t N°1 have brought Holly’s actual fourteen-year-old self into the story? Might have even presented an opportunity for a fourth causal loop: Fourteen-year-old Holly kissees fourteen-year-old Artemis, but only because fifteen-year-old Artemis had already told thirteen-year-old Holly that they would enjoy it. —Michael Main
Oh, bless my bum-flap. You’re time travelers.
A boy clutching a lemur and followed by a smaller version of himself is blown
                out of the page by a yellow explosion.
  • Science Fiction
  • Fantasy
  • Audience: Young Adults
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 12*

Eve of the Emperor Penguin


The magic tree house takes Jack and Annie to Antarctica to search for the fourth secret of happiness for Merlin. —based on fandom.com
Dressed in red polar suits, young Jack and Annie stand on an ice flo facing two
                penguins, one of which wears a crown.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Short Story

This Must Be the Place


At a bar, Andrea meets a loopy man who seems to already know her; he leaves a mysterious message on a napkin, which turns out to be a hint about their next meeting where the man is younger and no longer knows her. —Michael Main
If I had the power to decide never to meet him again, I reasoned, surely I had the power to change the course of the relationship for the better.
A collage of Tom Cruise and other likely figures from the 1980s beside a
                countdown of years to 1984.
  • Science Fiction
  • Music and Musicals
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 13*

Moonlight on the Magic Flute


Jack and Annie travel to Vienna, Austria, in 1762, where they meet the young Wolfgang Amadeus Mozart and his sister and help save the young budding genius’s life through music. —based on fandom.com
Dressed in the fancy clothes of a young prince, Jack plays a flute and leads
                Princess Annie, a bear, and a tiger through the woods.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 14*

A Good Night for Ghosts


Jack and Annie must travel back in time to New Orleans in 1915 to help a teenage Louis Armstrong fulfill his destiny and become the “King of Jazz.” —based on fandom.com
Wearing white shirts, trousers, and suspenders, young Jack and Annie are
                startled by two larger spiders in lantern light.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novel

When You Reach Me


Miranda has an odd friend named Marcus who knows a lot about time machines, another friend named Sal who has stopped hanging out with her, and a man—not really a friend—who sleeps under the mailbox out front. And then there are those mysterious notes from someone who seems to know quite a lot, but also needs her to write about everything that’s happening in her twelve-year-old life. —Michael Main
So if they had gotten home five minutes before they left, like those ladies promised they would, then they would have seen themselves get back. Before they left.
An abstract map of square city blocks with a few buildings, a shoe, a bread
                bag, a jacket with two pockets, a book, and other oddities in front of a city
                skyline.
  • Eloi Bronze Medal
  • Science Fiction
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 15*

Leprechaun in Late Winter


Jack and Annie travel back to nineteenth-century Ireland to inspire a young Augusta Gregory to share her love of Irish legends and folktales with the world. —based on fandom.com
Peeking over a rock wall in rolling green hills, young Jack and Annie are
                startled to see a marching leprechaun playing a tin whistle.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 16*

A Ghost Tale for Christmas Time


Jack and Annie travel back to Victorian London when Merlin asks them to use their magic to inspire Charles Dickens to write “A Christmas Carol.” —based on fandom.com
A giant, bearded ghost with a torch beseeches young Annie and Jack who are
                dressed as 19th-century London street fiddlers.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 17*

A Crazy Day with Cobras


The magic tree house whisks Jack and Annie back to India during the Mogul Empire in the 1600s to search for an emerald needed to break a magic spell. —based on fandom.com
Appearing as tiny fairies in colorful garb, young Annie and Jack face down two
                menacing cobras.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 18*

Dogs in the Dead of Night


Jack and Annie travel to a monastery in the Swiss Alps where, with the help of St. Bernard dogs and magic, they seek the second of four special objects necessary to break the spell on Merlin’s pet penguin, Penny. —based on fandom.com
Dressed as monks in brown robes, young Jack and Annie race through snow after a
                bounding Saint Bernard.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 19*

Abe Lincoln At Last


The magic tree house whisks Jack and Annie to Washington, D.C. in the 1860s where they meet Abraham Lincoln and collect a feather that will help break a magic spell. —based on fandom.com
Dressed as 19th-century American children, young Annie and Jack run across the
                White House lawn toward Abraham Lincoln.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 20*

A Perfect Time For Pandas


Magically transported to southwest China to find the final object needed to break the spell on Merlin’s beloved penguin, Jack and Annie take a side trip to the world’s largest giant panda reserve. —based on fandom.com
In red jumpsuits, young Annie and Jack carry three baby pandas through a stand
                of tall bamboo.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 21*

Stallion by Starlight


Jack and Annie are magically transported to Ancient Greece to find the meaning of greatness. There, they meet the young Alexander the Great and take part in the famous story of how he tamed his horse, Bucephalus. —based on fandom.com
Dressed in a toga and sandals, young Annie clings to the back of a rearing
                stallion as a frightened Jack looks on.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 22*

Hurry Up Houdini!


Jack and Annie meet one of the world’s most famous illusionists, Harry Houdini. —based on fandom.com
On stage in black suits and bow ties, young Jack and Annie use their wands to
                make cards and pigeons fly while rabbits leap from a top hat.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 23*

High Time for Heroes


Jack and Annie are magically transported to mid-1800s Thebes, Egypt, where they are saved from a dangerous accident by Florence Nightingale. —based on fandom.com
Dressed as an Egyptian explorer, young Jack has just gone over a cliff and now
                hangs by one hand in Annie
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Feature Film

Time Lapse


Three friends stumble across a camera that produces pictures from 24 hours in the future. That no-good Jasper thinks to use it to make a fortune with his bookie, while painter Finn is happy to see a painting that he’s going to paint, resulting in a nice example of the artist paradox. And Callie has her own agenda going on. From there, the plot turns into a gory thriller where whatever the photos show, the three friends must make happen or they will die as Mr. B. did, all while the bookie’s henchmen threaten them all. —Michael Main
Mr. B. invented a camera that takes pictures of the future.
Danielle Panabaker (as Callie) stares straight-ahead from out of a clockface
                above a large, mechanical and electronic contraption.
  • Eloi Bronze Medal
  • Science Fiction
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 24*

Soccer on Sunday


Jack and Annie search for the fourth secret of greatness for Merlin in Mexico City at the 1970 World Cup Games. They hope to learn something new from soccer player great, Pele. —based on fandom.com
On a muddy field, barefooted Jack jumps high to kick a soccer ball while Annie
                runs toward him.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novella

Magic Tree House: Super Edition 1

Danger in the Darkest Hour


The magic tree house takes Jack and Annie back in time to England in 1944, where the country is fighting for its life in World War II. Before long, Jack and Annie find themselves parachuting to Normandy, France, behind enemy lines, and they realize that they’ve arrived on the day before D-Day. Will the brave brother and sister be able to make a difference during one of the darkest times in history? —based on fandom.com
Dressed in G.I. gear from tip to toe, the children Jack and Annie parachute
                through exploding artillery at night.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
TV Season

12 Monkeys, Season 1


Same pandemic backstory as the movie, similar names for the characters, no Bruce Willis, and a mishmash of time-travel tropes along with tuneless minor-key chords in place of actual tension and slowly spoken clichéd dialogue in place of actual plot. Random discussions of fate brush shoulders with an admixture of possible time travel models from narrative time (when a wound sprouts on old JC’s shoulder while watching young JC get shot), to skeleton timelines (JC thinks that his timeline will vanish if he succeeds), to a fascination with a single static timeline (you’ll see it in Chechnya) and time itself has an agenda. Primarily, we’d say that the story follows narrative time from Cole’s point of view.

By the end of the first season, one principal character has seemingly been trapped in the 2043, and Cole is stuck in 2015, having just gone against fate in a major way, but with a third principal character poised to spread the virus via a jet plane.

P.S. Whatever you do, whether in narrative time or elsewhen, don’t bring up this adaptation as dinnertime conversation with Terry Gilliam (but do watch it if you can set aside angst over a lack of a consistent model and just go with Cole’s flow). —Michael Main
About four years from now, most of the human race will be wiped out by a plague, a virus. We know it’s because of a man named Leland Frost. I have to find him.

—from “Splinter” [s01e01]
A man
  • Science Fiction
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 25*

Shadow of the Shark


As a thank-you gift from Merlin and Morgan, Jack and Annie are sent on what should be a vacation at a luxurious resort in Cozumel, Mexico, but is, by mistake, an adventure with ancient Mayans instead. —based on fandom.com
On a log raft in rough water, Jack uses a paddle to fight off a shark while
                Annie clings on for dear life behind him.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 26*

Balto of the Blue Dawn


Jack and Annie travel back in time to 1925 Nome, Alaska, where they meet Balto, the famous sled dog, and save the town from an illness. —based on fandom.com
A black sled dog leads a team of five others pulling young Jack and Annie
                behind them on a wooden sled.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novelette

Magic Tree House: Merlin Mission 27*

Night of the Ninth Dragon


When a mysterious note invites them to Camelot, Jack and Annie travel in the magic tree house to the magical kingdom where they must find a lost dragon. —based on fandom.com
Young Annie and Jack face a fierce dragon at the edge of a volcanic caldera
                brimming with lava.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Feature Film

A Promise of Time Travel

  • written and directed by Craig Jessen, produced by April Grace Lowe
  • (North Carolina Gay and Lesbian Film Festival, Durham, North Carolina, 16 August 2016)

After fifteen years of estrangement, bookish Zelda Jones reunites with her best friend from high school, Cassie . At the start of their new relationship, it’s not apparent that their interactions are going anywhere, but as the other main characters weave their way into the plot, Zelda learns about time travel on a single, static timeline, and the pieces lock nicely into place.

Oh, and Dave’s grandfather had a plot to go back and kill Hitler, but that’s not really relevant to Zelda (and Cassie and Walter and John and Charlie). —Michael Main
If you do travel back in time, even though it’s in your subjective future, it’s in the objective past. So if you could travel back in time and if you were determined to change the past, when it came down to it, you’d either decide not to, or you’d fail.
Head shots of April Grace Lowe (as Zelda) and Angela Rysk (as Cassie) beside a
                smoking alarm clock.
  • Eloi Bronze Medal
  • Science Fiction
  • Definite Time Travel
Feature Film

Future ’38

  • written and directed by Jamie Greenberg
  • (Slamdance Film Festival, Park City, Utah, 24 January 2017)

In this “lost” film from 1938, fascist powers are rising in Europe, so Mr. Essex is sent forward to 2018 to retrieve a piece of formica that’s been put into a vault where, over the decades, it will have matured into superbomb material. I don’t know whether the bomb ever worked, but surprisingly, the campy film did work—at least toward the end when the full contents of the vault are revealed. —Michael Main
If I kill you now, you will never go back in time, there is no formica bomb, and Adolf Hilter takes over the world . . . with me as his heir.
Startled Nick Westrate (as Essex) and Betty Gilpin (as Banky) walk through a
                spect-a-color futuristic city.
  • Science Fiction
  • Comedy
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 29*

A Big Day for Baseball


Jack and Annie go back to Jackie Robinson’s major league debut at Ebbett’s Field in 1947. The story has a twist we haven’t seen before: When they put on two magic hats, everyone sees Jack and Annie as if they were teenage bat boys rather than little children. —Michael Main
One minute he’s tall! The next he’s short! One minute he can throw the ball! The next he can’t!
Dressed as a ballboy and ballgirl, young Jack and Annie watch Jackie Robinson
                swing a baseball bat.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Short Story

Ugo


At age six, Ugo began leaping into other parts of his life: sometimes into an older Ugo, sometimes younger, sometimes in control of his body, sometimes just observing. The whole leaping business isn’t entirely clear except fo his connection with his future wife Cynthia—or sometimes Ciznia—and his insistence that nothing he sees can ever be changed. —Michael Main
Later on, Ugo developed a theory about it. He said that in reality everybody Leaps all the time. The proof? Déjà vu. The feeling of having already experienced what is in fact happening for the first time was for him the ultimate, definitive evidence of Leaping. The only difference between Ugo and everyone else was that he remembered, while we don’t.
An old woman in I red robe stands among waves and flying fish.
  • Fantasy
  • Mainstream
  • Debatable Time Travel
Nonfiction Book

Paradoxes of Time Travel


Ryan Wasserman’s philosophical book is one of two books* that need to live on your nonfiction shelf. One by one and with complete reference to the past literature, he presents all the major paradoxes of time travel along with different models of time travel and arguments against time travel even being possible. Just get it and read it cover-to-cover. As a bonus, Professor Wasserman, who is on the Philosophy faculty at Western Washington State University, will cheerfully have discussions about time travel issues via e-mail with those of us up in the nearby ITTDB Citadel.

* The other, of course, is Paul J. Nahin’s Time Machines: Time Travel in Physics, Metaphysics and Science Fiction, Second Edition. —Michael Main
Each of the foregoing cases involves a self-defeating act—an act such that, if it were performed, it wold not be. Self-defeating acts are obviously impossible, since the performance of such an act would imply a contradiction. Yet time travel seems to make such acts possible. This suggests the following line of argument against backward time travel:

(P1) If backward time travel were possible, it would be possible to perform a self-defeating act.

(P2) It is impossible to perform a self-defeating act.

(C) Backward time travel is impossible.
A descending spiral of Roman numerals in the style of a clockface.
  • Eloi Silver Medal
  • Nonfiction
  • Definite Time Travel
Short Film

Coffee Time

  • written and directed by David deMena
  • (Highbridge Film Festival, 21 April 2018)

Tiffany’s coffee takes her back and forth through time to help with her hectic college life. —Michael Main
Tiffany [waking up late]: Oh, no! It didn’t go off. I thought I’d turned it on.
No image currently available.
  • Science Fiction
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 30*

Hurricane Heroes in Texas


The children play a role in saving thousands during the Great Galviston Hurricane]]. —Michael Main
Annie turned back to the couple. “Excuse me again, do you know today’s date?” she asked.
“September eighth,” the woman said with a friendly smile.
“Nineteen-hundred?” Jack asked.
Wading through knee-high water in a storm, young Jack and Annie carry two dogs
                to safety.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 31*

Warriors in Winter


Morgan sends Jack and Annie back to the time of Marcus Aurelius on the northern border of the Empire where they meet kind soldiers, mean soldiers, and the emperor himself. —Michael Main
“So I hear,” said the emperor. “When I first met you, I thought you must live nearby in Carnuntum. But now I do not think that is so. Where is your home?”
“Frog Creek, Pennsylvania,” said Annie.
“Beyond the Danube,” said Jack.
A Roman soldier seems just as startled as young Jack and Annie when all three
                meet on a snowy slope.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 32*

To the Future, Ben Franklin!


Jack and Annie bring a rather fainthearted and confused Ben Franklin to their own time, hoping to convince him to sign the Constitution. —Michael Main
Morgan’s telling us to take Ben to Frog Creek. To our time.
Dressed as Colonial American children, young Jack and Annie race across a brick
                street with Ben Franklin.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 33*

Narwhal on a Sunny Night


Jack and Annie visit the first Icelandic settlers in Greenland. —Michael Main
“Oh, I get it—your dad is Erik, so you are called Erik-son!” said Annie.
At the edge of an ice flow, young Jack and Annie greet a narwhal as it breeches
                the surface of the sea.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Novella

Not This Tide


Through the eyes of young Rosemary (in 1944 London during the time of buzz bombs and V-2 rockets) and old Rosemary (now called Mary in 2035 Oslo), we see the picture of her whole life from her imaginary friend during the war to her physicist grandson at Princeton. —Michael Main
A World War 2 Maunsell Fortress on tall pylons in the English Channel with
                purplish concentric circles and a list of years behind it.
  • Science Fiction
  • Fantasy
  • Definite Time Travel
Novel

Oona Out of Order


On Oona Lockhart’s 19th birthday, her mind leaps into her 51-year-old body where she learns that she’s fated to leap into a random year on every coming birthday, living each year once in a normal manner except for her discontinous consciousness. —Michael Main
Do I ever find any kind of stability? Or do I live life year after year like some kind of existential hobo?
Drawing of the face of a startled young woman with red lipstick, straight brown
                hair, and bangs.
  • Mainstream
  • Definite Time Travel
TV Episode

Amazing Stories (v2s01e01)

The Cellar


Sam Taylor, a carpenter remodeling houses with his brother, feels ungrounded in 2019 until he uncovers a century-old photograph of a young bride along with a matchbook from a 1919 speakeasy. Like everyone else, we wondered at the end who Evelyn’s child is. Sam might be the father if a pregnant Evelyn traveled forward a second time, but that seems unlikely. I enjoyed that the writers left things open for us to wonder, and I also enjoyed the carefully constructed single static timeline. —Michael Main
You were right—the photograph, it was me, it . . . It will be. I don’t know how, but it will.
Dylan O
  • Eloi Bronze Medal
  • Fantasy
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 34*

Late Lunch with Llamas


The children rescue a llama at the height of the Inca Empire. —Michael Main
“Show us,” the emperor ordered. “Show us all how this little llama speaks.”
Young Jack carries a baby llama along a narrow mountain path with Annie and an
                eagle behind him.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Essay

Mindscape #124

How Time Travel Could and Should Work

  • by Sean Carroll
  • from Mindscape 124 [podcast], 23 November 2020

Alas, Sean Carroll doesn’t pull any punches in his realistic assessment of the kinds of time travel that are or may be possible under the laws of physics as we know them in our universe. Or, as Professor Carroll himself puts it: “. . . podcasting isn’t for the squeamish.” In my layman’s understand of his most excellent explication, time travel aficionados have two physical phenomena on which to hang their Hat Things:
  1. Time Dilation: Under the laws of Einstein’s special relativity, a fast traveler who leaves the Earth, zooming around for a while at near light speed before returning, will experience less passage of time than those who stay in the more-or-less fixed reference frame of Earth. How cool is that? Yes, you can travel as far into the future as you like, so long as you have a means of zooming up to a high enough speed and returning. (And according to general relativity, time dilation also occurs inside a high gravitational field, although I didn’t notice a discussion of this sort of time dilation in the podcast.)
  2. Closed Timelike Curves: The second hope for time travelers are certain distributions of matter that (according to Einstein’s equations of general relativity) result in directed paths through spacetime in which a traveler along the path is always moving forward through time—and yet completing a full circuit of the path returns the traveler to the starting point in both space and time. That’s the good news. The bad news is that such paths, called closed timelike curves, might only be possible in the presense of infinitely long rotating cylinders or other physical conditions that may be impossible to engineer.
Up in the ITTDB Citadel, many of us found ourselves in a disquieted state at this point in Professor Carroll’s podcast (roughly the two-hour mark). Some went to bed early in a kind of daze; others decided it was time for a long walk through the lonely ice paths that surround the Citdel. But for those with the fortitude to keep their ears glued to the pod, there was a great reward. Carroll had already waded through the swift, waist-high currents of causality, predeterminism, free will, the A Theory of Time, the B Theory of time, and more. But now he was ready to dive into deep, uncharted waters. Yes, now he was ready to leave known physics behind, to talk about branching time that went beyond the Everettian Many Worlds of Schrödinger’s equation, and to consider what kind of a world would be needed to allow stories such as Back to the Future and Looper to consistently hold together. With this in mind, he devices a four-pronged theory that concludes with what he calls Narrative Time. For me, narrative time shares some features with the time model of Asimov’s The End of Eternity (a model that we call Hypertime in our story-tagging system), but it goes far beyond that.

Suffice it to say that when all the Librarians up in the Citadel woke from their sleeps and returned from their treks, we had a celebration that was strident enough to raise Lazurus Long himself from the dead (if he is dead, that is). —Michael Main
I think that if we really try hard, we can make sense of this. But there’s a rule in physics or whatever that the more surprising and weird the phenomenon is, the more you’re gonna have to work to introduce some weird elements into your theory to explain it. That’s not surprising, right? So we’re gonna need some leaps of faith here, but I think I can come up with the scheme that involves four ingredients on the basis of which we can actually make sense of Back to the Future, Looper, and other similar movies.
A brain below a lit incandescant light bulb.
  • Eloi Gold Medal
  • Nonfiction
  • Definite Time Travel
Early Chapter Book

The Magic Tree House 35*

Camp Time in California


Annie and Jack are given magical drawing powers when they meet a grizzly bear and a few other wanderers in 1903 Yosemite. —Michael Main
If you’re a friend of bears, then take my advice: Walk softly and carry a big stick.
A bear cub at night startles young Jack and Annie by their campfire.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Comic Book

The Magic Tree House: Graphic Novel 1

Dinosaurs before Dark: The Graphic Novel


The adaptation and artwork are faithful and delightful, although I’m disappointed that commercial pressures resulted in a graphic novel for what was explicitly designed to engage early readers. —Michael Main
Wow. I wish we could go there.
A happy young girl sits in front of a hesitant young boy with glasses and a
                backpack on the neck of a Pteranodon.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
TV Episode

Fantasy Island (v3s01e04)

Once Upon a Time in Havana


Finally! Some Actual Time Travel™ as Elena takes young drummer Alma Garcia back to 1967 Havana to learn the real story of the musical grandfather who abandoned his family decades ago—and the role Alma played in that single, static timeline. —Michael Main
Grandfather: Who are you? Where do you really come from? Elma: Just an Americana who plays the drums.
Gigi Zumbado (as Alma) smiles at night in front of a chain-link fence.
  • Fantasy
  • Music and Musicals
  • Definite Time Travel
Comic Book

The Magic Tree House: Graphic Novel 2

The Knight at Dawn: The Graphic Novel


Retells, in graphic form, the tale of eight-year-old Jack and his younger sister, Annie, who are whisked back in the magic tree house to the time of knights and castles. —from publicity material
Annie: [turning on her flashlight] That’s right! We have a magic wand and we’re not afraid to use it!
A happy young girl and a hesitant young boy with glasses and a backpack sit in
                front of a knight in armor on a bucking horse.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Early Chapter Book

Magic Tree House 36*

Sunlight on the Snow Leopard


The magic tree house is back with a message from Morgan le Fay telling Jack and Annie to seek out the Gray Ghost and listen to her story, and immediately they are whisked away to Nepal where they meet Tenzin, a climber who has recently lost his family, and who takes them up to the mountain to meet a snow leopard and renew himself. —based on fandom.com
Dressed in warm mountain gear, young Jack and Annie race with a snow leopard
                over an alpine field.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Comic Book

The Magic Tree House: Graphic Novel 3

Mummies in the Morning: The Graphic Novel


For the first time in graphic novel—live the adventure again with new full-color vibrant art that brings the magic to life! —from publicity material
Two frightened children enter a tunnel in a pyramid along with a black cat.
  • Fantasy
  • Audience: Children
  • Debatable Time Travel
Flash Fiction

Remainder


The setting is necessarily vague, but it seems that in the future, doctors may recommend limited time travel to seek closure for a lost personal relationship. —Michael Main
She wants to go back more, as far as possible. Maybe before he was sick, even. But two years is the limit the doctor from the company gives her, his voice serious, concerned.
Stylized outline of a rocket launching in a green circular seal for
                Daily Science Fiction.
  • Eloi Honorable Mention
  • Science Fiction
  • Definite Time Travel
Early Chapter Book

Magic Tree House 37*

Rhinos at Recess


No image currently available.
  • Fantasy
  • Audience: Children
  • Undetermined Time Travel