Timelash (E18): Cmdr Ed Straker and Col Virginia Lake disappear and are discovered unconscious near the dead body of a Shado operative (Turner). Col Foster and co. try to understand what has happened. It features Douglas Nottage, Ayshea Brough, Dolores Mantez, Michael Billington, Ed Bishop, Norma Ronald. UFO is a British science fiction drama television series, which originally aired from 1970 to 1971. It concerns the covert efforts of the Supreme Headquarters Alien Defence Organisation (SHADO) to prevent an alien invasion of Earth.