Directed by
| William Beaudine | ... | (directed by) |
Writing Credits
| Karl Brown | ... | (original story by) |
| Barney A. Sarecky | ... | (screenplay by) (as Barney Sarecky) |
Cast (in credits order) complete, awaiting verification
| Bela Lugosi | ... | Dr. James Brewster | |
| Louise Currie | ... | Billie Mason | |
| Wallace Ford | ... | Jeff B. Carter | |
| Henry Hall | ... | Dr. George Randall | |
| Minerva Urecal | ... | Agatha Brewster | |
| Emil Van Horn | ... | The Ape | |
| J. Farrell MacDonald | ... | Police Capt. O'Brien (as J. Farrel MacDonald) | |
| Wheeler Oakman | ... | Police Detective Brady | |
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Ralph Littlefield | ... | Zippo |
| Jack Mulhall | ... | Reporter | |
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Charles Jordan | ... | Police Detective O'Toole |
| Ernest Morrison | ... | Copyboy (as Sunshine Sammy Morrison) | |
| Rest of cast listed alphabetically: | |||
| Charlie Hall | ... | Barney - Photographer (uncredited) | |
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George Kirby | ... | Townsend - Butler (uncredited) |
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Ray Miller | ... | Police Detective (uncredited) |
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William Ruhl | ... | Martin - Editor (uncredited) |
Produced by
| Jack Dietz | ... | producer (produced by) |
| Sam Katzman | ... | producer (produced by) |
| Barney A. Sarecky | ... | associate producer |
Cinematography by
| Mack Stengler | ... | (photography) |
Editing by
| Carl Pierson | ... | film editor |
Art Direction by
| Dave Milton | ... | (as David Milton) |
Second Unit Director or Assistant Director
| Arthur Hammond | ... | assistant director |
Sound Department
| Glen Glenn | ... | sound engineer |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |
Music Department
| Edward J. Kay | ... | musical director (as Edward Kay) |