Capricorn One is a 1978 government conspiracy thriller film about a Mars landing hoax. It was written and directed by Peter Hyams and produced by Lew Grade's ITC Entertainment. It stars Elliott Gould with James Brolin, Sam Waterston and O. J. Simpson as the astronauts. At an unspecified time, Capricorn One—the first manned mission to Mars—is on the launch pad. Such NASA authorities as Dr. James Kelloway (Hal Holbrook) realize, too late, that a faulty life-support system supplied by a corrupt NASA contractor will kill the astronauts during the flight. As the manned space program needs a success to continue, they find themselves forced to falsify the landing rather than cancel the mission.