Mystery Submarine
“Undersea Raider at Large!”
We checked 8 streaming services in India on 08 Jun 2026 at 16:54 IST
About
Posing as an ex-German medical officer, a U. S. Navy Intelligence Officer sets out to rescue a kidnapped scientist, and sink a Nazi submarine, hiding off the coast of South America.
Cast
Macdonald Carey
as Brett Young
Märta Torén
as Madeline Brenner
Robert Douglas
as Commander Von Molter
Carl Esmond
as Heldman
Ludwig Donath
as Adolph Guernitz
Jacqueline Dalya
as Carla
Fred Nurney
as Bruno
Katherine Warren
as Mrs. Weber
Howard Negley
as Captain Elliott
Bruce Morgan
as Kramer
Ralph Brooks
as Stefan
Paul Hoffman
as Hartwig
Peter Michael
as Crew Members
Larry Winter
as Crew Members
Frank Rawls
as Crew Members
Peter Similuk
as Crew Members
Where does Mystery Submarine rank today?
Mystery Submarine is #10000 on the CineFlixo Daily Streaming Charts today.
- Highest: #10000
- Top 10: 0 days
- Top 100: 0 days
Watch Mystery Submarine Online Free in HD
Stream Mystery Submarine online free in HD on CineFlixo. A well-rated war, drama, and thriller movie originally produced in Francés and released in 1950, it's earned a solid 7.0/10 from 2 viewers worldwide.
About Mystery Submarine
“Undersea Raider at Large!”
Posing as an ex-German medical officer, a U. S. Navy Intelligence Officer sets out to rescue a kidnapped scientist, and sink a Nazi submarine, hiding off the coast of South America. Running 78 minutes.
Mystery Submarine Cast and Characters
The cast features Macdonald Carey (as Brett Young), Märta Torén (as Madeline Brenner), Robert Douglas (as Commander Von Molter), Carl Esmond (as Heldman), and Ludwig Donath (as Adolph Guernitz). Their performances are a major reason Mystery Submarine has built such a passionate audience.
Where to Watch Mystery Submarine Online
On CineFlixo you can watch Mystery Submarine free — no account, no credit card, no ads in the middle of the show. We stream the full film in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch Mystery Submarine NowWhy People Are Watching Mystery Submarine
Mystery Submarine flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts and 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 Mystery Submarine
Where can I watch Mystery Submarine online for free?
You can watch Mystery Submarine 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 Mystery Submarine?
Mystery Submarine runs for 78 minutes (about 1.3 hour).
Is Mystery Submarine good? What's the rating?
Mystery Submarine holds a 7.0/10 rating based on 2 reviews — well above average.
Who is in the cast of Mystery Submarine?
The main cast includes Macdonald Carey, Märta Torén, Robert Douglas, and Carl Esmond, plus a strong supporting ensemble.
Is Mystery Submarine available in Francés?
Yes — Mystery Submarine was originally produced in Francés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Mystery Submarine released?
Mystery Submarine was released in 1950.
Do I need an account to watch Mystery Submarine on CineFlixo?
No. CineFlixo is free and you can watch Mystery Submarine without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed Mystery Submarine, check out Listen in the Compartments, Das Boot, The Hunt for Red October, Out of the Depths, and The Last U-Boat.
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Frequently Asked Questions
Common questions about Mystery Submarine
Where can I watch Mystery Submarine for free?
You can watch Mystery Submarine (1950) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is Mystery Submarine about?
Mystery Submarine is a War/Drama film. Posing as an ex-German medical officer, a U. S. Navy Intelligence Officer sets out to rescue a kidnapped scientist, and sink a Nazi submarine, hiding off the coast of South America.
When was Mystery Submarine released?
Mystery Submarine was released on December 1, 1950. It has a runtime of 1h 18m. The film was produced by Universal International Pictures.
Who stars in Mystery Submarine?
Mystery Submarine stars Macdonald Carey, Märta Torén, Robert Douglas and Carl Esmond. The full cast list is available in the Cast section above.
Is Mystery Submarine available in HD?
Yes, Mystery Submarine is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.