![Le Mystérieux Monsieur Sylvain](https://image.tmdb.org/t/p/w200//89tbRfoAN09rd4yPQqPr177faw7.jpg)
Le Mystérieux Monsieur Sylvain
1 hour 35 minutes1947-04-16
0.0
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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?
Cast
![Frank Villard](https://image.tmdb.org/t/p/w200//d0EhMvzu8l3DGoXej0CUddxeoWc.jpg)
Frank Villard
Ancelin
![Simone Renant](https://image.tmdb.org/t/p/w200//uCFsiPGebOk3DhL61XXE6ejbnkn.jpg)
Simone Renant
Françoise Dastier
![Jean Chevrier](https://image.tmdb.org/t/p/w200//28qbCfWNr0E0bIQEvw774dzRoxp.jpg)
Jean Chevrier
Chantenay
![Jean Marchat](https://image.tmdb.org/t/p/w200//yQ3E4gXas9S7QFZwjSUdragzVnI.jpg)
Jean Marchat
Morgat
![Marcelle Praince](https://image.tmdb.org/t/p/w200//7uH7kRc93h6awmw5kF28vIXi5Jl.jpg)
Marcelle Praince
The marquise
![André Bervil](https://image.tmdb.org/t/p/w200//6MEA8Lx1UocuWyCNH7oC6p8WR7l.jpg)
André Bervil
The killer
![Marcel Raine](/_next/static/media/notFound.aecd17f8.png)
Marcel Raine
Commander Dartois
![Paul Amiot](https://image.tmdb.org/t/p/w200//x99cXE0aasgWjiUCAZKf6yir7Rb.jpg)
Paul Amiot
The colonel
![Claude Nollier](https://image.tmdb.org/t/p/w200//5cb2ixbYwLb4eJ9ySwfDcKPQQSS.jpg)
Claude Nollier
![Suzanne Bara](/_next/static/media/notFound.aecd17f8.png)
Suzanne Bara
![Roger Bontemps](/_next/static/media/notFound.aecd17f8.png)
Roger Bontemps
![Max Doria](https://image.tmdb.org/t/p/w200//kZC4utp0mzeQEigK8NU3eXu5lpO.jpg)
Max Doria
![Jacques Mattler](/_next/static/media/notFound.aecd17f8.png)
Jacques Mattler
![Jacques Muller](/_next/static/media/notFound.aecd17f8.png)
Jacques Muller
![Roger Coirault](/_next/static/media/notFound.aecd17f8.png)
Roger Coirault
![Maud Lamy](/_next/static/media/notFound.aecd17f8.png)
Maud Lamy
![Philippe Dumat](https://image.tmdb.org/t/p/w200//ypj6hYkv5bbL4rENybsQDS0wBZR.jpg)