Character mistake: When Tony talks to captain of Titanic he states he was born in 1938, but in episode 4 "The Day The Sky Fell In" it is December 1941, he should be 3 years old, but as a young child he is about 12 years old.
Mistakes
In the saloon, the table at the lower right of the shot has nothing on it. After a brief close-up of the bartender, we cut back to the master shot - and even though no one's gone near it, the previously empty table now has a candle in a tin holder sitting on it. See more...
Trivia
Throughout the series, many shots of the extensive time tunnel project are actually "borrowed" footage of the Krell laboratory complex from the 1956 film Forbidden Planet. See more...
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Time Tunnel mistakes
Continuity: Doug and Tony are being interrogated by the Mars Mission flight crew. In two-shot, they're standing shoulder-to-shoulder with each other, no more than a few inches apart. When the shot cuts to a wider angle, Tony is suddenly several feet away.
Factual error: The aliens show Doug and Tony the planet they plan to invade - Earth, of course. But the special effects department forgot to give poor old Earth any clouds. (There are clouds over more than 70% of our planet at any given time.) When they go down to the surface, though, there are plenty of clouds in the sky.
Time Tunnel trivia
Throughout the series, many shots of the extensive time tunnel project are actually "borrowed" footage of the Krell laboratory complex from the 1956 film Forbidden Planet.
