Mystery Submarine

Posing as an ex-German medical officer, a U. S. Navy Intelligence Officer sets out to rescue a kidnapped scientist, and sink a Nazi submarine, hiding off the coast of South America.

• Douglas SirkDirector
• George F. SlavinScreenplay

• Macdonald CareyBrett Young
• Märta TorénMadeline Brenner
• Robert DouglasCommander Von Molter
• Carl EsmondHeldman
• Ludwig DonathAdolph Guernitz
• Jacqueline DalyaCarla
• Fred NurneyBruno
• Katherine WarrenMrs. Weber
• Howard NegleyCaptain Elliott
• Bruce MorganKramer
• Ralph BrooksStefan
• Paul HoffmanHartwig