Directed by
| Clifford Sanforth | ||
Writing Credits
| Joseph O'Donnell | ... | (screenplay) |
| Clarence Hennecke | ... | (idea) & |
| Karl R. Coolidge | ... | (idea) (as Carl Coolidge) |
Cast (in credits order) verified as complete
| Bela Lugosi | ... | Dr. Arthur Perry / Edwin Perry | |
| June Collyer | ... | June Houghland | |
| Huntley Gordon | ... | Dr. Henry M. Scofield (as Huntly Gordon) | |
| George Meeker | ... | Richard Grayson | |
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Henry Mowbray | ... | Nelson - Chief of Police |
| Charles Hill Mailes | ... | Prof. James Houghland | |
| Claire McDowell | ... | Mrs. Houghland | |
| Hattie McDaniel | ... | Isabella - the Cook | |
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Allen Jung | ... | Ah Ling - the Houseboy (as Allan Jung) |
| Charles K. French | ... | Donald M. Jordan | |
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Larry Francis | ... | Mendoza |
| Henry Hall | ... | Hammond | |
| Billy Sullivan | ... | Reardon - Watchman (as William 'Billy' Sullivan) | |
| William H. Tooker | ... | Allen (as William Tooker) | |
| Rest of cast listed alphabetically: | |||
| Ruth Cherrington | ... | Party Guest (uncredited) | |
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Wally Dean | ... | Party Guest (uncredited) |
| Sam Harris | ... | Party Guest (uncredited) | |
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Lew Hicks | ... | Plainclothesman (uncredited) |
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Frank Meredith | ... | Plainclothesman (uncredited) |
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Dick Rush | ... | Detective (uncredited) |
Produced by
| William M. Pizor | ... | executive producer (uncredited) |
| Clifford Sanforth | ... | executive producer |
| Edward M. Spitz | ... | associate producer |
Music by
| Oliver Wallace | ... | (uncredited) |
Cinematography by
| James S. Brown Jr. | ... | (as James Brown Jr.) |
| Arthur Reed | ||
Editing by
| Leslie F. Wilder | ... | (as Leslie Wilder) |
Art Direction by
| Lewis J. Rachmil | ... | (as Louis Rachmil) |
Production Management
| Melville De Lay | ... | production manager (as Melville Delay) |
Additional Crew
| William M. Pizor | ... | presenter |
| Henry Spitz | ... | technical supervisor |
| Milton M. Stern | ... | television technician |
