Cast
Michael Rennie
Klaatu, alias Mr. Carpenter
Patricia Neal
Helen Benson
Billy Gray
Bobby Benson
Sam Jaffe
Prof. Jacob Barnhardt
Hugh Marlowe
Tom Stevens
Lock Martin
Gort
Freeman Lusk
General Cutler
Edith Evanson
Mrs. Crockett, landlady
Frank Conroy
Mr. Harley, Secretary to the President
Frances Bavier
Mrs. Barley, boarder
John Brown
George Barley, boarder
Olan Soule
Mr. Krull, boarder
Marjorie Crossland
Hilda, Barnhart's secretary
Elmer Davis
Elmer Davis
