On Jupiter's moon Ganymede, an alien life-form has taken over the body of a human astronaut, creating an almost perfect copy. It then begins the long return journey to Earth.
Dr. Crawford
Roger Westcott
Captain Jaffe
Donnie Chaffer
Jensen
Scotty McIntyre
Gerry
Dave
Frank
Ken
Commander
Officer
Guard
Story
Director
Adaptation
Associate Producer
Producer