Col. Joe Parkman

Craig Stevens

Acting

Dr. Nedrick 'Ned' Jackson

William Hopper

Acting

Marge Blaine

Alix Talton

Acting

Gen. Mark Ford

Donald Randolph

Acting

Prof. Anton Gunther

Florenz Ames

Acting

Corporal

Paul Smith

Acting

Lt. Fred Pizar

Paul Campbell

Acting

Sgt. Pete Allen

Pat Conway

Acting

Lou

Phil Harvey

Acting

Mrs. Farley

Helen Jay

Acting

State Trooper

Bing Russell

Acting

Capt. Frank Carver

David McMahon

Acting

Narrator (voice)

Marvin Miller

Acting

Photographer (uncredited)

Michael Forest

Acting

C-47 Pilot (uncredited)

Sumner Williams

Acting