The Mysterious Mr. M
| MPAA Rating: | NR |
| Genre: | Adventure |
| Country: | United States |
| Produced By: | Joseph O'Donnell, Morgan Cox |
| Directed By: | Vernon Keays, Lewis D. Collins |
| Written By: | Joseph F. Poland, Barry Shipman, Paul Huston |
| Cast: | Mauritz Hugo, Pamela Blake, Jane Randolph, Keith Richards, Virginia Brissac, Walden Boyle, Douglas Carter, George Eldredge, Helen Deverell, Byron Foulger, Harry Strang, George Magrill, Beatrice Roberts, Robert Barron, Jamesson Shade, Cyril Delevanti, Anthony Warde, Warren Jackson, Bob Thom, Howard Negley, Dennis Moore, Donald Kerr, Alfred Wagstaff, Emmett Vogan Jr., Daral Hudson, Edmund MacDonald, Frank Cody, Casey MacGregor, Jack Ingram, Leo Kaye, Richard Martin, Franklin Parker, John Hamilton, Buck Harrington, Joseph Crehan, Jack Lorenz, Danny Morton, Patricia Alphin, Bruce Donovan, Jack Rockwell, William Ching, Eddie Parker, Joe Haworth, Perc Launders |
| In Theaters: | Jul 23, 1946 |
| Runtime: | 3 hours 47 minutes |
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