Character mistake: The end of this episode concerns IR chasing down a copy of the photos the Hood taken of the Thunderbird vehicles. However, they show no concern for being photographed in person, as they're lounging around in casual clothes in the end, on an active film set with cameras everywhere, and no camera detector on their persons.
Thunderbirds (1964)
1 character mistake in Martian Invasion - chronological order
Starring: David Graham, Ray Barrett, Peter Dyneley, Shane Rimmer
Continuity mistake: When Scott is in the cockpit of the Mole, he has two blue tubes in the holsters of his belt. But when he is cutting through the fire doors, the tubes have changed to one blue and one yellow.
Trivia: Jeff Tracy's five sons were named after Mercury astronauts - Scott Carpenter, Virgil Grissom, Alan Shephard, Gordon Cooper and John Glenn.