The Mysterious Mr. M

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.

• Lewis D. CollinsDirector
• Vernon KeaysDirector
• Paul HustonWriter
• Joseph F. PolandWriter
• Barry ShipmanScreenplay

• Edmund MacDonaldAnthony Waldron
• Pamela BlakeShirley Clinton
• Danny MortonDerek Lamont
• Virginia BrissacCornelia Waldron
• Joseph CrehanDan Blair
• Jack IngramWilliam Shrag
• Dennis MooreAgent Grant Farrell
• Richard MartinDetective Lt. Kirby Walsh
• Byron FoulgerWetherby
• Jane RandolphMarina Lamont
• William ChingJim Farrell
• Joe HaworthDonninger