Calificación
Reparto

Richard Widmark
Capt. Adam Jones

Bella Darvi
Denise Montel

Victor Francen
Prof. Montel

Cameron Mitchell
'Ski' Brodski

Gene Evans
Chief Holter

David Wayne
Tugboat Walker

Stephen Bekassy
Neuman

Richard Loo
Hakada Fujimori

Robert Adler
Welles (uncredited)

Eugene Borden
French Reporter (uncredited)

Leslie Bradley
Mr. Aylesworth (uncredited)

Henry Kulky
McCrossin (uncredited)

Peter Ortiz
Crewman (uncredited)

Ray Stevens
Crewman (uncredited)

John Wengraf
Col. Schuman (uncredited)

Ben Wright
BBC Announcer (uncredited)