UFO: The Psychobombs (Episode 12)

A trio of innocent civilians, Linda Simmonds, Clem Mason and Daniel Clark are captured by aliens using a hypnotic signal and imbued with superhuman powers. Straker encounters Clark, who overpowers him and leaves him unconscious. When he comes round, Straker is given an ultimatum by the aliens. Unless SHADO ceases its operations, the trio will be sent in as suicide bombers to destroy it.