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.
- Released: 1946-07-23
- Runtime: 227 minutes
- Genre: Action, Mystery
- Stars: Edmund MacDonald, Pamela Blake, Danny Morton, Virginia Brissac, Joseph Crehan, Dennis Moore, Richard Martin, Byron Foulger, Jane Randolph, William Ching, Joe Haworth, Jack Ingram, Patricia Alphin
- Director: Vernon Keays, Lewis D. Collins