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Casting

Director

Robert Wise

Producer

Julian Blaustein

Screenplay

Edmund H. North

Original Music Composer

Bernard Herrmann

Director of Photography

Leo Tover

Editor

William Reynolds

Art Direction

Addison Hehr, Lyle R. Wheeler

Set Decoration

Claude E. Carpenter, Thomas Little

Costume Design

Perkins Bailey, Travilla

Makeup Artist

Ben Nye

Michael Rennie
Michael RennieKlaatu, alias Mr. Carpenter
Patricia Neal
Patricia NealHelen Benson
Billy Gray
Billy GrayBobby Benson
Sam Jaffe
Sam JaffeProf. Jacob Barnhardt
Hugh Marlowe
Hugh MarloweTom Stevens
Lock Martin
Lock MartinGort
Freeman Lusk
Freeman LuskGeneral Cutler
Edith Evanson
Edith EvansonMrs. Crockett, landlady
Frank Conroy
Frank ConroyMr. Harley, Secretary to the President
Frances Bavier
Frances BavierMrs. Barley, boarder
John Brown
John BrownGeorge Barley, boarder
Olan Soule
Olan SouleMr. Krull, boarder
?
Marjorie CrosslandHilda, Barnhart's secretary
?
Elmer DavisElmer Davis
?
H.V. KaltenbornH. V. Kaltenborn
?
Drew PearsonDrew Pearson
?
Gabriel HeatterGabriel Heatter (voice)
Harry Lauter
Harry LauterLieutenant in Charge of Landing Site
?
James DoyleArmy Dr. White
?
Larry DobkinBalding Army Doctor
Robert Osterloh
Robert OsterlohArmy Examining Doctor
?
Glenn HardyRadio Interviewer at Landing Site
Tyler McVey
Tyler McVeyBrady
House Peters Jr.
House Peters Jr.M.P. Captain at Barnhardt's
George Lynn
George LynnConference Colonel Ryder
Dorothy Neumann
Dorothy NeumannMargaret, Tom's secretary
Wheaton Chambers
Wheaton ChambersMr. Bleeker, jeweller
Carleton Young
Carleton YoungZone Five Lieutenant Colonel
Harry Harvey
Harry HarveyThe Cab Driver
?
Sammy OggSammy, boy witness
Bess Flowers
Bess FlowersLady Outside Jewelry Store
James Seay
James SeayGovernment Man
?
Grady GallowayRadar Operator
?
Hassan KhayyamIndian Newscaster
?
John BartonBritish Newscaster
Stuart Whitman
Stuart WhitmanSentry (scene deleted)
?
Rama BaiScientific Delegate
?
John BurtonBritish Radio Announcer
?
Bill WelshRadio Announcer (voice)
Guy Williams
Guy WilliamsRadio Operator (uncredited)