Continuity mistake: When the tied up Penelope initially attempts to contact Jeff, you can see two books to the left of the bomb standing up. But when she tries to contact Jeff from the centre of the room, the books have suddenly been knocked over. In the next shot of Penelope the books are standing up again.
Thunderbirds (1964)
1 continuity mistake in The Man from MI.5
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: Although he is the main villain, the Hood appears in only six episodes throughout the entire series.