In the third Harry Potter book, (among other things) Harry’s friend Hermione uses a time-turner amulet to travel short distances in time so she can attend more classes, and the device also proves useful when Harry and friends must rescue Sirius and Buckbeak.

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.