Ordeal (UFO)
"Ordeal" is the nineteenth episode aired of the first series of "UFO", a 1970 British television science fiction series about an alien invasion of Earth. The screenplay was written by Tony Barwick and the director was Ken Turner. The episode was filmed from 8 August to 20 August 1969, and aired on ATV Midlands on 14 April 1971. Though shown as the nineteenth episode, it was actually the ninth to have been filmed.
UFO (TV series)
The Andersons' live-action science fiction movie, "Doppelgänger" (also known as "Journey to the Far Side of the Sun") is considered an immediate precursor to "UFO", which was their first live-action TV series. The series featured actors, costumes, props, locations and music that had appeared in the film, and eleven cast members of the film appeared in at least one episode of "UFO".