Ian Hendry, Gerry Anderson, Robert Parrish, Roy Thinnes, Patrick Wymark, Lynn Loring, Sylvia Anderson, Donald James, Tony Williamson

Doppelgänger is a movie starring Roy Thinnes, Ian Hendry, and Patrick Wymark. The European Space Exploration Council sends two astronauts to explore a planet similar to the Earth but located on the opposite side of the sun.