Le Mystérieux Monsieur Sylvain
We checked 8 streaming services in India on 06 Jun 2026 at 14:09 IST
About
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
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
Claude Nollier
as
Suzanne Bara
as
Roger Bontemps
as
Max Doria
as
Jacques Mattler
as
Jacques Muller
as
Roger Coirault
as
Maud Lamy
as
Philippe Dumat
as Inspector
Where does Le Mystérieux Monsieur Sylvain rank today?
Le Mystérieux Monsieur Sylvain is #10000 on the CineFlixo Daily Streaming Charts today.
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Watch Le Mystérieux Monsieur Sylvain Online Free in HD
Looking for a place to watch Le Mystérieux Monsieur Sylvain online for free? You've landed on the right page. Le Mystérieux Monsieur Sylvain is a well-rated Francés thriller movie from 1947 that you can stream right now on CineFlixo in high quality, no signup required.
About Le Mystérieux Monsieur Sylvain
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? Running 95 minutes.
Le Mystérieux Monsieur Sylvain Cast and Characters
The cast features Frank Villard (as Ancelin), Simone Renant (as Françoise Dastier), Jean Chevrier (as Chantenay), Jean Marchat (as Morgat), and Marcelle Praince (as The marquise). Their performances are a major reason Le Mystérieux Monsieur Sylvain has built such a passionate audience.
Where to Watch Le Mystérieux Monsieur Sylvain Online
CineFlixo lets you stream Le Mystérieux Monsieur Sylvain online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.
▶ Watch Le Mystérieux Monsieur Sylvain NowWhy People Are Watching Le Mystérieux Monsieur Sylvain
Le Mystérieux Monsieur Sylvain flies under the radar but it deserves your attention. What makes it work is tight pacing that earns its twists. If you enjoy Francés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about Le Mystérieux Monsieur Sylvain
Where can I watch Le Mystérieux Monsieur Sylvain online for free?
You can watch Le Mystérieux Monsieur Sylvain online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is Le Mystérieux Monsieur Sylvain?
Le Mystérieux Monsieur Sylvain runs for 95 minutes (about 1.6 hours).
Is Le Mystérieux Monsieur Sylvain good? What's the rating?
Le Mystérieux Monsieur Sylvain holds a 7.0/10 rating based on 1 reviews — well above average.
Who is in the cast of Le Mystérieux Monsieur Sylvain?
The main cast includes Frank Villard, Simone Renant, Jean Chevrier, and Jean Marchat, plus a strong supporting ensemble.
Is Le Mystérieux Monsieur Sylvain available in Francés?
Yes — Le Mystérieux Monsieur Sylvain was originally produced in Francés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Le Mystérieux Monsieur Sylvain released?
Le Mystérieux Monsieur Sylvain was released in 1947.
Do I need an account to watch Le Mystérieux Monsieur Sylvain on CineFlixo?
No. CineFlixo is free and you can watch Le Mystérieux Monsieur Sylvain without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
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Frequently Asked Questions
Common questions about Le Mystérieux Monsieur Sylvain
Where can I watch Le Mystérieux Monsieur Sylvain for free?
You can watch Le Mystérieux Monsieur Sylvain (1947) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is Le Mystérieux Monsieur Sylvain about?
Le Mystérieux Monsieur Sylvain is a Thriller film. 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?
When was Le Mystérieux Monsieur Sylvain released?
Le Mystérieux Monsieur Sylvain was released on April 16, 1947. It has a runtime of 1h 35m. The film was produced by Paris-Film Production.
Who stars in Le Mystérieux Monsieur Sylvain?
Le Mystérieux Monsieur Sylvain stars Frank Villard, Simone Renant, Jean Chevrier and Jean Marchat. The full cast list is available in the Cast section above.
Is Le Mystérieux Monsieur Sylvain available in HD?
Yes, Le Mystérieux Monsieur Sylvain is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.