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Watch The Mysterious Mr. M (1946) Online

  • 3.8/10
  • RUNTIME: 3h 47m
  • COUNTRIES: United States of America
  • Subtitles: English

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.