Continuity mistake: When Scott and Virgil contact Tracy Island and their reports are affected by a bad interference, Jeff is wearing his glasses, but later on in the scene they disappear.
Thunderbirds (1964)
1 continuity mistake in Danger at Ocean Deep
Starring: David Graham, Ray Barrett, Peter Dyneley, Shane Rimmer
Revealing mistake: When the dummy plane is shot out of the sky by the fighter pilot, a piece of the plane shoots off into the top left of the screen and bounces off the sky background. (00:23:05)
Trivia: The shot of Thunderbird 2 flying in the dark is actually reused footage from a previous episode, "The Man from MI5."