Factual error: While firing their muskets at the guards as they rescue the Dauphin, Tony and Doug each quickly discharge their weapons twice without reloading. Muskets are one-shot weapons that required immediate reloading after firing.
Time Tunnel (1966)
1 factual error in Reign of Terror
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.
Visitors From Beyond the Stars - S1-E18
Trivia: The Time Tunnel Homing Beacon used in "The Revenge of Robin Hood" episode is hanging on the bulkhead by the door of the aliens' spaceship.