![](https://image.tmdb.org/t/p/w342/a620dqtrkiP7qvNpM3tKj9BheiO.jpg)
The Mysterious Mr. M (1946)
An evil scientist known as "Mr. M." uses a drug he has developed called "hypnotreme" to help steal submarine equipment. Federal agent Grant Farrell is dispatched to find the mysterious villain and stop his nefarious plans.
Directing:
Writing:
Stars:
- Lewis D. Collins
- Vernon Keays
Writing:
- Barry Shipman
- Paul Huston
- Joseph F. Poland
Stars:
Release Date: 1946-07-23
3.8/10
![themoviedb.org themoviedb icon](https://movie-intelligence.com/assets/images/tmdb.png)
- Country: US
- Language: English
- Runtime: 227
Cornelia Waldron
Shirley Clinton
Anthony Waldron
Derek Lamont
Dan Blair
William Shrag
Donninger
Agent Grant Farrell
Detective Lt. Kirby Walsh
Wetherby
Marina Lamont
Jim Farrell
![](https://image.tmdb.org/t/p/w300/aPLVDp2bcjwJNDCLQa7HBQFY0gy.jpg)
![](https://image.tmdb.org/t/p/w300/c7ENJPMphcbNWHz1LLuEHMscJcH.jpg)