Kadro (18)
Trevor HowardCaptain Thompson
José FerrerMajor Stringer
Anthony NewleyMarine Clarke
Victor MaddernSgt. Craig
Percy HerbertMarine Lomas
David LodgeMarine Ruddock
Peter ArneMarine StevensGraham StewartMarine Booth
John FabianMarine Cooney
John Van EyssenMarine Bradley
Robert DesmondMarine Todd
Walter FitzgeraldGestapo Comdt.
Karl StepanekAssistant Gestapo Officer
Dora BryanMyrtie
Beatrice CampbellMrs Ruddock
Sydney TaflerPoliceman
Christopher LeeSubmarine Commander Alan GrievesPat McGrathMarine Bellamy (uncredited)