Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scientific expedition that has been missing for twenty years. They find themselves unwelcome by the expedition's lone survivor and warned of destruction by an invisible force if they don't turn back immediately.
as Dr. Edward Morbius
as Altaira Morbius
as Commander John J. Adams
as Lt. 'Doc' Ostrow
as Lt. Jerry Farman
as Cookie
as Chief Engineer Quinn
as Bosun
as Crewman Grey
as Crewman Youngerford
as Crewman Strong
as Crewman Randall
as Crewman Lindstrom
as Crewman Moran
as Crewman Nichols
as Crewman Silvers
as Crewman (uncredited)
as Crewman (uncredited)
as Narrator (voice) (uncredited)
as Robby the Robot (interior) (uncredited)
as Robby the Robot (voice) (uncredited)
as Robby the Robot
