The writer, David L. Hewitt, took chunks of plot and script from The Time Travelers (1964), swapped the blonde for a brunette, swapped the accidental time gate for an accidental time rift that drags the whole lab through time as if it were a time ship, added a anachronistic dinosaur, and ended up with an unwatchable movie.

Like the 1964 version, this version has a brief mention that it’s impossible to change events that have already happened, but unlike the original, the montage at the end of the film is mere chaos that no longer reinforces the idea of a single deterministic, nonbranching timeline. Despite that, I enjoyed the consequences of the villainous character running into himself, but at the same time, I dismayed at the discussion of how meeting yourself could instantly cause a disastrous explosion or implosion or maybe something-or-other (the audio was unintelligible at 1:12) would cease to exist. (I pray that the space-time continuum wasn’t in peril).