Revealing mistake: Indicative of previous takes, the floor inside the alien probe already has several human footprints all over it before the characters exit their life boat and walk on it. (00:10:00)
Revealing mistake: Eddy Albert's stunt double is obvious during the avalanche of boulders scene.
Revealing mistake: Janie is frozen in place on her tricycle, but the 5-year-old actress has a hard time holding still. She's visibly fidgeting. And when a freeze-frame of her is used for close-ups, there's a black blotch on the film over her neck. (00:26:30)
Revealing mistake: This episode's futuristic video-phones seem to be a production afterthought not in the original script. Consequently, Mrs. James talks to her husband's clone on the phone, but doesn't seem to see him on the screen. She tells James, "He sounded like you," and goes on about his voice, but never mentions his appearance. Later, her reaction to seeing both of them together indicates she's never seen the duplicate before - even though she has, on the video-phone. (00:25:00)
Cold Hands, Warm Heart - S2-E2
Revealing mistake: This 1964 episode is supposed to take place in its own near-future (the late 1960s). But some of the shots in the beginning reveal the use of outdated stock footage. During the parade, there's a close-up of a 48-star US flag, a relic even in '64, as Alaska and Hawaii became the 49th and 50th states in 1959. Old flags are supposed to be burned, and wouldn't have been used for civic events such as ticker-tape parades. (00:00:50)
Cold Hands, Warm Heart - S2-E2
Revealing mistake: Mismatched stock footage puts the Venus-bound Barton in four different spaceships during his journey. We see brief shots of a Vanguard rocket launch, an Atlas missile, a V-2 rocket sequence, and finally, special effects shots of the ship borrowed from the 1950s SF series "Men Into Space." Not one of these vehicles even remotely resembles any of the others. (00:23:15)