Craig Stevens

Col. Joe Parkman

William Hopper

Dr. Nedrick 'Ned' Jackson

Alix Talton

Marge Blaine

Donald Randolph

Gen. Mark Ford

Florenz Ames

Prof. Anton Gunther

Paul Smith

Corporal

Paul Campbell

Lt. Fred Pizar

Pat Conway

Sgt. Pete Allen

Phil Harvey

Lou

Helen Jay

Mrs. Farley

Bing Russell

State Trooper

David McMahon

Capt. Frank Carver

Marvin Miller

Narrator (voice)

Michael Forest

Photographer (uncredited)

Sumner Williams

C-47 Pilot (uncredited)