Gerry Anderson Classic
ITC ENTERMAINMENT (Supermarionation) music from Stingray is heard in this episode
The Hood arranges an accident during the filming of an alien movie, trapping to actor in a cave that is flooding so that he can being the International Rescue and film their rescue operation. He hypnotise his half-brother into sabotaging thunderbird 1 camera detector so that he can secretly record the rescue operation without being detected.
Runaway Mob train in the next episode 'Brink of Disaster'