 | Sidney Fox als Mlle. Camille L'Espanaye |
 | Bela Lugosi als Dr. Mirakle |
 | Leon Ames als Pierre Dupin |
 | Bert Roach als Paul |
 | Betty Ross Clarke als Mme. L'Espanaye |
 | Brandon Hurst als Prefect of Police |
 | D'Arcy Corrigan als Morgue Keeper |
 | Noble Johnson als Janos The Black One |
 | Arlene Francis als Woman of the Streets |
 | Ted Billings als Sideshow Spectator (uncredited) |
 | Herman Bing als Franz Odenheimer (uncredited) |
 | Joe Bonomo als Gorilla (uncredited) |
 | Agostino Borgato als Alberto Montani (uncredited) |
 | Iron Eyes Cody als Indian at Sideshow (uncredited) |
 | Christian J. Frank als Gendarme Using Snuff (uncredited) |
 | Charles Gemora als Erik, the Gorilla (uncredited) |
 | Harrison Greene als Sideshow Barker (uncredited) |
 | Charlotte Henry als Blonde Girl in Sideshow Audience (uncredited) |
 | Harry Holman als Victor Albert Adolph Jules Hugo Louis Dupont (uncredited) |
 | Edna Marion als Mignette (uncredited) |
 | Torben Meyer als The Dane (uncredited) |
| Charles Millsfield als Bearded Man at Sideshow (uncredited) |
 | Monte Montague als Workman / Gendarme (uncredited) |
 | John T. Murray als Gendarme (uncredited) |
 | Tempe Pigott als Crone (uncredited) |
 | Dorothy Vernon als Tenant (uncredited) |
 | Michael Visaroff als Mirakle's Sideshow Barker (uncredited) |
 | Polly Ann Young als Girl (uncredited) |
| Robert Florey | Director |
| Robert Florey | Adaptation |
| Tom Reed | Screenplay |
| Dale Van Every | Screenplay |
| John Huston | Additional Dialogue |
| E.M. Asher | Associate Producer |
| Carl Laemmle Jr. | Producer |
| Karl Freund | Director of Photography |
| Milton Carruth | Editor |
| Charles D. Hall | Art Direction |
| Jack Pierce | Makeup Artist |
| Scott R. Beal | Assistant Director |
| Charles S. Gould | Assistant Director |
| Joseph A. McDonough | Assistant Director |
| Herman Rosse | Set Designer |
| John P. Fulton | Special Effects |
| Ethel M. Kelly | Writer |
| C. Roy Hunter | Recording Supervision |
| Joe Bonomo | Stunt Double |
| Maurice Pivar | Supervising Editor |
| Gilbert Kurland | Music Supervisor |
| Heinz Roemheld | Music |
| Carl Laemmle | Presenter |
| Richard Schayer | Scenario Writer |
| Howard Salemson | Technical Advisor |
| Edgar Allan Poe | Short Story |
