

02/07/1942
American naval forces are using a port in Iceland as a base for anti-submarine patrols to protect North Atlantic convoys from Nazi subs. The Nazis send undercover agents into the port in a scheme to blow up the entrance to the harbor and keep the patrols blocked in. The officers in charge of the patrols have to find the spies and stop them before they achieve their objective.

Bruce Bennett
as Capt. Morgan

Virginia Field
as Lida Adams

John Beal
as Carl Hansen

Clifford Severn
as Sandy Brown

Larry Parks
as Gregory

Lloyd Bridges
as Bert

Victor Kilian
as Otto

Hans Schumm
as Cmdr. von Smith

Erik Rolf
as Gunther

Eddie Laughton
as Radio Operator

Wilhelm von Brincken
as U-Boat Officer
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