Humanity finds a mysterious object buried beneath the lunar surface and sets off to find its origins with the help of HAL 9000, the world's most advanced super computer.
Keir Dullea
as Dr. David Bowman
Gary Lockwood
as Dr. Frank Poole
William Sylvester
as Dr. Heywood Floyd
Douglas Rain
as HAL 9000 (voice)
Daniel Richter
as Moonwatcher
Leonard Rossiter
as Dr. Andrei Smyslov
Margaret Tyzack
as Elena
Robert Beatty
as Dr. Ralph Halvorsen
Sean Sullivan
as Dr. Roy Michaels
Frank W. Miller
as Mission Controller (voice)
Bill Weston
as Astronaut
Ed Bishop
as Aries-1B Lunar Shuttle Captain