帕德里夏·妮尔
Patricia Neal
饰:Helen Benson
迈克尔·伦尼
Michael Rennie
饰:克拉图 Klaatu,Carpenter
休·马洛威
Hugh Marlowe
饰:Tom Stevens
山姆·谢斐
Sam Jaffe
饰:Prof. Jacob Barnhardt
比利·格雷
Billy Gray
饰:Bobby Benson
豪利本
Holly Bane
饰:Army Captain (uncredited)
马歇尔·布拉德福德
Marshall Bradford
饰:Chief of Staff (uncredited)
约翰·伯顿
John Burton
饰:British radio MC (uncredited)
惠顿·钱伯斯
Wheaton Chambers
饰:Mr. Bleeker (diamonds) (uncredited)
John Close
饰:Captain (uncredited)
James Craven
饰:Businessman (uncredited)
Jack Daly
饰:Bit Man (uncredited)
劳伦斯·多布金
Lawrence Dobkin
饰:Army physician (uncredited)
Charles Evans
Charles Evans
饰:Major general (uncredited)
伊迪丝·埃文森
Edith Evanson
饰:Mrs. Crockett (boarding house) (uncredited)
Elizabeth Flournoy
饰:Jewelry clerk (uncredited)
Harry Harvey Jr.
饰:Taxi driver (uncredited)
哈里·劳特
Harry Lauter
饰:Platoon leader (uncredited)
Freeman Lusk
饰:Gen. Cutler (uncredited)
George Lynn
饰:Col. Ryder (uncredited)
Herbert Lytton
饰:Brigadier General (uncredited)
Michael Mahoney
饰:Sentry (uncredited)
David McMahon
饰:Air Force sergeant (welder) (uncredited)
泰勒麦克维
Tyler McVey
饰:Brady (government agent) (uncredited)
米勒德·米切尔
Millard Mitchell
饰:Gen Cutler (uncredited)
霍华德·尼格利
Howard Negley
饰:Colonel (uncredited)
多萝西 纽曼
Dorothy Neumann
饰:Margaret (Tom's secretary) (uncredited)
Sammy Ogg
饰:Boy (uncredited)
Robert Osterloh
Robert Osterloh
饰:Army physician (uncredited)
小豪斯·彼得斯
House Peters Jr.
饰:MP captain (uncredited)
John M. Reed
饰:Tank Driver (uncredited)
费·鲁普
Fay Roope
饰:Major general (uncredited)
James Seay
饰:Government man (uncredited)
奥兰·索尔
Olan Soule
饰:Mr. Krull (boarder) (uncredited)
Harlan Warde
饰:Carson (uncredited)
斯图尔特·惠特曼
Stuart Whitman
饰:Army sentry (uncredited)
亚当·威廉姆斯
Adam Williams
饰:Army physician (uncredited)
Rush Williams
饰:MP sergeant (uncredited)
Carleton Young
饰:Colonel (uncredited)
富兰克林·法纳姆
Franklyn Farnum
饰:Extra in Office Building Corridor (uncredited)
山姆·哈里斯
Sam Harris
饰:Scientific Delegate (uncredited)
哈罗德·米勒
Harold Miller
饰:Military Officer at Pentagon Meeting (uncredited)
'Snub' Pollard
'Snub' Pollard
饰:Cab Driver (uncredited)
查尔斯·坦嫩
Charles Tannen
饰:Voice of Radio Announcer (uncredited)
弗朗西斯·巴维尔
Frances Bavier
饰:Mrs. Barley
Lock Martin
饰:Gort
H.V. Kaltenborn
饰:H.V. Kaltenborn
Elmer Davis
饰:Elmer Davis
Drew Pearson
饰:Drew Pearson
Gabriel Heatter
饰:Gabriel Heatter
约翰·布朗
John Brown
饰:George Barley (boarder) (uncredited)
弗兰克·康罗伊
Frank Parish Conroy
饰:Mr. Harley (President's secretary) (uncredited)
Eric Corrie
饰:British Soldier (uncredited)
John Costello
饰:Cockney (uncredited)
Marjorie Crossland
饰:Hilda (Barnhardt's secretary) (uncredited)
Jim Doyle
饰:A doctor (uncredited)
Grady Galloway
饰:American Radar Operator (uncredited)
Bill Gentry
饰:Sentry (uncredited)
Glenn Hardy
饰:Interviewer (uncredited)
Gil Herman
饰:Government agent (uncredited)
Hassan Khayyam
饰:Indian Radio Announcer (uncredited)
Gayle Pace
饰:Captain (uncredited)
Ted Pearson
饰:Colonel (uncredited)
Kim Spalding
饰:Army orderly (uncredited)
Harmon Stevens
饰:Bit Man (uncredited)
John Hiestand
饰:TV Announcer on Truck (uncredited)
萨姆·扎菲
Shalom Jaffe
饰:雅各布·巴恩哈特教授