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Le Mystérieux Monsieur Sylvain (1947)
Genres: Thriller
In an aero-naval base, a marine engineer who was about to deliver the name of a redoubtable spy is murdered. Shortly afterwards three different men appear on the crime scene, each of them claiming to be Monsieur Sylvain, the expected sleuth. But which of the three investigators is actually Sylvain? And what about this delightful young lady who arouses one of the police inspectors? Couldn't she be the murderous spy?
- Frank Villard as Ancelin
- Simone Renant as Françoise Dastier
- Jean Chevrier as Chantenay
- Jean Marchat as Morgat
- Marcelle Praince as The marquise
- André Bervil as The killer
- Marcel Raine as Commander Dartois
- Paul Amiot as The colonel