An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.
Michael Rennie
as Klaatu, alias Mr. Carpenter
Patricia Neal
as Helen Benson
Billy Gray
as Bobby Benson
Sam Jaffe
as Prof. Jacob Barnhardt
Hugh Marlowe
as Tom Stevens
Lock Martin
as Gort
Freeman Lusk
as General Cutler
Edith Evanson
as Mrs. Crockett, landlady
Frank Conroy
as Mr. Harley, Secretary to the President
Frances Bavier
as Mrs. Barley, boarder
John Brown
as George Barley, boarder
Olan Soule
as Mr. Krull, boarder
