Three Interceptors are sent to frustrate a UFO attack but one collides with the UFO, killing the pilot, Ken Matthews. Lieutenant Gay Ellis was giving the pilots their instructions and Straker suspects she sacrificed Matthews to give spare another pilot,Mark Bradley, her apparent lover. Psychological tests on Gay and Mark, as processed by a computer, confirm that they are in love but both deny it. When an alien lands on Earth, Gay sends Mark to capture it, to prove that she is impartial and prepared to risk his life. He comes through and goes on a date with her. Straker tells them that if Gay had followed official SHADO protocol all three pilots would have been killed. ... https://www.youtube.com/watch?v=M3gSsGdCo_k

Following a wild night out with a girl called Sylvia, Foster is receiving a refreshing sauna bath at the SHADO health farm. Drifting into semi-consciousness, he comes to to find he has been abducted by an alien and is on a UFO, which is shot down onto the Moon's surface. He survives but has to be extremely careful how he removes the helmet he is wearing. Clumsy removal would kill him because of the breathing liquid it contains. However, as he drifts in and out of consciousness, it appears that he never left the sauna. ... https://www.youtube.com/watch?v=MHuvKUkcYms