
92 minutes
9/18/1951
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
Marjorie Crossland
as Hilda, Barnhart's secretary
Elmer Davis
as Elmer Davis
H.V. Kaltenborn
as H. V. Kaltenborn
Drew Pearson
as Drew Pearson
Gabriel Heatter
as Gabriel Heatter (voice)

Harry Lauter
as Lieutenant in Charge of Landing Site
James Doyle
as Army Dr. White
Larry Dobkin
as Balding Army Doctor

Robert Osterloh
as Army Examining Doctor
Glenn Hardy
as Radio Interviewer at Landing Site

Tyler McVey
as Brady

House Peters Jr.
as M.P. Captain at Barnhardt's

George Lynn
as Conference Colonel Ryder

Dorothy Neumann
as Margaret, Tom's secretary

Wheaton Chambers
as Mr. Bleeker, jeweller

Carleton Young
as Zone Five Lieutenant Colonel

Harry Harvey
as The Cab Driver

Sammy Ogg
as Sammy, boy witness

Bess Flowers
as Lady Outside Jewelry Store

James Seay
as Government Man
Grady Galloway
as Radar Operator
Hassan Khayyam
as Indian Newscaster
John Barton
as British Newscaster

Stuart Whitman
as Sentry (scene deleted)
Rama Bai
as Scientific Delegate
John Burton
as British Radio Announcer
Bill Welsh
as Radio Announcer (voice)

Guy Williams
as Radio Operator (uncredited)