Sgt. Ben Peterson
James Whitmore
FBI Agent Robert Graham
James Arness
Mrs. Lodge
Mary Alan Hokanson
Jensen
Olin Howland
Ambulance Attendant
William Schallert
Child Psychiatrist
Ann Doran
Railroad Yard Watchman
Dub Taylor
Army Sergeant
Leonard Nimoy
Bald Reporter at L.A. News Conference
Richard Deacon
Government Official
Forbes Murray
Trooper #2
Kenner G. Kemp
Soldier
Charles Perry
Dr. Pat Medford
Joan Weldon
Matron
Dorothy Green
Official at D.C. Meeting
Willis Bouchey
Blonde at Police Station
Mary Lou Holloway
Teenager in Police Station
Dick York
Dr. Harold Medford
Edmund Gwenn
Brig. Gen. Robert O'Brien
Onslow Stevens
Maj. Kibbee
Sean McClory
The Ellinson Girl
Sandy Descher
Trooper Ed Blackburn
Chris Drake
Trooper Capt. Fred Edwards
Don Shelton
Alan Crotty
Fess Parker
Director
Gordon Douglas
Story
George Worthing Yates
Original Music Composer
Bronislau Kaper
Producer
David Weisbart
Screenplay
Ted Sherdeman
Director of Photography
Sidney Hickox
Editor
Thomas Reilly
Adaptation
Russell S. Hughes
Art Direction
Stanley Fleischer
Set Decoration
G.W. Berntsen
Makeup Artist
Gordon Bau
Sound
Francis J. Scheid
Wardrobe Designer
Moss Mabry
Henry Vilardo
Props
Robert Turner