The Mysterious Mr. M 1946

Synopsis:

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.

Directed by: Lewis D. Collins & Vernon Keays
Written by: Joseph F. Poland & Barry Shipman & Paul Huston
Runtime: 227 minutes
Tagline: 1000 startling adventures! 1000 weird sensations!
Cast:
Edmund MacDonald
Edmund MacDonald
Anthony Waldron 
Pamela Blake
Pamela Blake
Shirley Clinton 
Danny Morton
Danny Morton
Derek Lamont 
Virginia Brissac
Virginia Brissac
Cornelia Waldron 
Joseph Crehan
Joseph Crehan
Dan Blair 
Jack Ingram
Jack Ingram
William Shrag