Mystery
Detective Ellery Queen aids Free Dutch agents battle Nazi spies over a prize of industrial diamonds.
Directed by
James P. Hogan
Gilbert Roland
Paul Gilette
Margaret Lindsay
Nikki Porter
James Burke
Police Sergeant Velie
Gale Sondergaard
Mrs. Van Dorn
William Gargan
Ellery Queen
Sig Ruman
Heinrich, Spy Leader
Charley Grapewin
Inspector Richard Queen

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