Richard Widmark

Capt. Adam Jones

Acting

Bella Darvi

Denise Montel

Acting

Victor Francen

Prof. Montel

Acting

Cameron Mitchell

'Ski' Brodski

Acting

Gene Evans

Chief Holter

Acting

David Wayne

Tugboat Walker

Acting

Stephen Bekassy

Neuman

Acting

Richard Loo

Hakada Fujimori

Acting

Robert Adler

Welles (uncredited)

Acting

Eugene Borden

French Reporter (uncredited)

Acting

Leslie Bradley

Mr. Aylesworth (uncredited)

Acting

Henry Kulky

McCrossin (uncredited)

Acting

Peter Ortiz

Crewman (uncredited)

Acting

Ray Stevens

Crewman (uncredited)

Acting

John Wengraf

Col. Schuman (uncredited)

Acting

Ben Wright

BBC Announcer (uncredited)

Acting

Harry Carter

Acting

Harry Denny

Acting

Frank Kumagai

Acting

Eddie Lee

Acting

Cactus Mack

Acting

Rollin Moriyama

Acting

Ron Nyman

Acting

Don Orlando

Acting

Beal Wong

Acting