Synopsis
Detective Ellery Queen aids Free Dutch agents battle Nazi spies over a prize of industrial diamonds.
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Cast
- William GarganEllery Queen
- Margaret LindsayNikki Porter
- Charley GrapewinInspector Richard Queen
- Gale SondergaardMrs. Van Dorn
- Gilbert RolandPaul Gilette
- Sig RumanHeinrich, Spy Leader
- James BurkePolice Sergeant Velie
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