"Martian Invasion" is the twenty-fourth episode of Thunderbirds season 1, first broadcast on 17th March 1966. It was the tenth episode produced. The Hood uses his power over Kyrano to force him to disable Thunderbird 1's Automatic Camera Detector, then poses as a cameraman on a movie set to trap two actors in a flooding cave. When International Rescue comes to help, he films their machines and Scott must chase after him to destroy the film of the operation.