Revealing mistake: When Tony and Doug are captured by the Greeks, the lead Greek soldier points his sword to Troy. The "Troy" shown is a modern still picture of the ruins of the Greek Acropolis and surrounding structures, complete with a modern blue and white vehicle that looks like a bus in the lower left hand part of the picture.
Time Tunnel (1966)
1 revealing mistake in Revenge of the Gods - chronological order
Starring: James Darren, John Zaremba, Robert Colbert, Whit Bissell
Continuity mistake: After prying off the lock to the storeroom with the pry bar, Doug drops it on the ground, but the next shot of him entering the storeroom shows it still in his hand.
The Revenge of Robin Hood - S1-E16
Trivia: This episode includes scenes and footage from 1938's "The Adventures of Robin Hood" that starred Errol Flynn.