 | Lionel Atwill als Ivan Eigor |
 | Glenda Farrell als Florence Dempsey |
 | Allen Vincent als Ralph Burton |
 | Fay Wray als Charlotte Duncan |
 | Frank McHugh als Editor Jim |
 | Edwin Maxwell als Worth, Eigor's bootlegger partner |
 | Arthur Edmund Carewe als Professor Darcy |
 | Gavin Gordon als George Winton |
 | Matthew Betz als Hugo, deafmute sculptor |
 | Bull Anderson als Otto, museum janitor |
 | Holmes Herbert als Dr. Rasmussen |
 | Claude King als Mr. Galatalin |
 | William B. Davidson als Detective (Uncredited) |
 | Guy Usher als Detective (Uncredited) |
 | DeWitt Jennings als Police Captain, 12th Precinct |
 | Robert Homans als Desk Sergeant, 12th Precinct |
 | James Donlan als Morgue Attendant (Uncredited) |
 | Thomas E. Jackson als Detective at Morgue |
 | Frank Darien als Autopsy Surgeon (Uncredited) |
 | Wallis Clark als Autopsy Surgeon's Assistant (Uncredited) |
 | Monica Bannister als Joan Gale |
 | Robert Emmett O'Connor als Police Sergeant by Christmas tree |
 | Lon Poff als Tall Thin Henchman (Uncredited) |
 | Max Barwyn als Museum Visitor (Uncredited) |
 | Wade Boteler als Ambrose (Uncredited) |
 | Otto Hoffman als Igor's Assistant (Uncredited) |
| Perry Ivins als Copy Editor (Uncredited) |
 | Margaret Mann als Wax Figure of Queen Victoria (Uncredited) |
 | Pat O'Malley als Plainclothesman (Uncredited) |
 | Milton Kibbee als Reporter (Uncredited) |
 | Harry C. Bradley als Reporter (Uncredited) |
| Charles McMurphy als Policeman in Prison (Uncredited) |
| Frank Fanning als Policeman (Uncredited) |
| Dick Rush als Policeman (Uncredited) |
 | Lee Shumway als Policeman (Uncredited) |
| William Wagner als Morgue Attendant's Assistant (Uncredited) |
 | Frank Austin als Winton's Valet (Uncredited) |
 | Walter Percival als Winton's Attorney (Uncredited) |
| Michael Curtiz | Director |
| Rex Wimpy | Special Effects |
| Anton Grot | Art Direction |
| Everett Alton Brown | Sound |
| Don Mullaly | Screenplay |
| Carl Erickson | Screenplay |
| George Amy | Editor |
| Henry Blanke | Producer |
| Hal B. Wallis | Producer |
| Charles Belden | Story |
| Orry-Kelly | Costume Design |
| Perc Westmore | Makeup Artist |
| Frank Shaw | Assistant Director |
| Lee Katz | Assistant Director |
| William Koenig | Production Manager |
| Ray Rennahan | Director of Photography |
| Ray Romero | Makeup Artist |
| Herbert Plews | Property Master |
| Bob Bonner | Additional Camera |
| Thad Brooks Jr. | Assistant Camera |
| Chuck Davis | Grip |
| Frank B. Good | Additional Camera |
| W. Howard Greene | Additional Camera |
| Claude Hutchinson | Gaffer |
| Floyd Lee | Additional Camera |
| Roy Musgrave | Camera Operator |
| Arthur Pierson | Additional Camera |
| Richard Towers | Additional Camera |
| Scotty Welbourne | Still Photographer |
| Leo F. Forbstein | Conductor |
| Cliff Hess | Additional Music |
| Bernhard Kaun | Original Music Composer |
| Fred Applegate | Continuity |
