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.
Cast: Macdonald Carey, Märta Torén, Robert Douglas, Carl Esmond, Ludwig Donath, Jacqueline Dalya, Fred Nurney, Katherine Warren, Howard Negley, Bruce Morgan, Ralph Brooks, Paul Hoffman, Peter Michael
Crew: George W. George (Story), George F. Slavin (Screenplay), Ralph Dietrich (Producer), Douglas Sirk (Director), Clifford Stine (Director of Photography)