The Unknown
“Will Tonight Bring Her...LOVE or DEATH?”
"The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance.
Where to watch The Unknown in United States
Can I watch The Unknown in United States? The Unknown isn't on subscription streaming in United States right now, but you can rent or buy it on Amazon Video and Google Play Movies.
Amazon Video
Google Play Movies
YouTube
Fandango At HomeClick a service to open The Unknown there. Availability last verified on November 9, 2026.
Where is The Unknown streaming around the world?
| Country | Streaming on | Rent / Buy |
|---|---|---|
| United States | — | Amazon Video, Google Play Movies, YouTube |
| United Kingdom | — | YouTube |
| Canada | — | YouTube |
| Australia | — | Amazon Video, YouTube |
About The Unknown
The Unknown is a 1946 English-language mystery, thriller and horror film directed by Henry Levin. The cast is led by Karen Morley, Jim Bannon, Jeff Donnell. It has a runtime of 1h 10m. In United States, it is available to rent or buy on Amazon Video and Google Play Movies.
The Unknown was produced by Columbia Pictures and made in United States of America. It was released on July 4, 1946.
- Director
- Henry Levin
- Writers
- Julian Harmon, Malcolm Stuart Boylan
- Release date
- July 4, 1946
- Original language
- English
- Status
- Released
- Country
- United States of America
- Production
- Columbia Pictures
The Unknown cast & crew
The Unknown was directed by Henry Levin and written by Julian Harmon and Malcolm Stuart Boylan.
The cast features Karen Morley as Rachel Martin, Jim Bannon as Jack Packard, Jeff Donnell as Nina Arnold, Mark Roberts as Reed Cawthorne (as Robert Scott), Robert Wilcox as Richard Arnold, and Barton Yarborough as Doc Long.
Behind the camera, cinematography is by Henry Freulich and it was produced by Wallace MacDonald.
Is The Unknown worth watching?
At 1h 10m, it's an easy, time-light watch.
If you enjoy mystery, thriller, and horror, The Unknown is worth a place on your watchlist.
How and where to watch The Unknown
The Unknown isn't on a subscription service in United States right now, but you can rent or buy it on Amazon Video, Google Play Movies, YouTube, and Fandango At Home.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of The Unknown
Karen Morley
Rachel Martin
Jim Bannon
Jack Packard
Jeff Donnell
Nina Arnold
Mark Roberts
Reed Cawthorne (as Robert Scott)
Robert Wilcox
Richard Arnold
Barton Yarborough
Doc Long
James Bell
Edward Martin
Wilton Graff
Ralph Martin
Helen Freeman
Phoebe Martin
Robert Kellard
James Wetherford (as Robert Stevens)
J. Louis Johnson
Joshua (uncredited)
More from the I Love a Mystery Collection
The Unknown — FAQs
▸Where can I watch The Unknown in United States?
The Unknown is not on subscription streaming in United States right now, but you can rent or buy it on Amazon Video and Google Play Movies and YouTube.
▸What language is The Unknown in?
The Unknown is originally in English. Subtitle and dub options vary by streaming service.
▸How long is The Unknown?
The Unknown runs 1 hours 10 minutes (70 minutes).
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