Directed by
| Sidney Lanfield | ||
Writing Credits
| Bess Meredyth | ... | (screenplay) and |
| Gene Fowler | ... | (screenplay) |
| F. Tennyson Jesse | ... | (story "Not Proven") |
| Allen Rivkin | ... | (uncredited) |
Cast (in credits order) verified as complete
| Frances Dee | ... | Allison Lang | |
| Brian Donlevy | ... | Duffy Giles | |
| Charles Butterworth | ... | Doc Felix | |
| Helen Westley | ... | Mrs. Martha Hargraves | |
| Henry Stephenson | ... | Professor Jerome Hargraves | |
| Sara Haden | ... | Henrietta Hargraves | |
| Etienne Girardot | ... | Dr. Alexander Cotton | |
| Paul Stanton | ... | District Attorney | |
| Gavin Muir | ... | Dr. William Barth | |
| Julius Tannen | ... | City Editor | |
| Nigel De Brulier | ... | Dr. Hall | |
| Hilda Vaughn | ... | Bertha | |
| Philip Sleeman | ... | Carl | |
 |
William Ingersoll | ... | Judge |
| Paul McVey | ... | Coroner | |
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Bruce Mitchell | ... | Police Sergeant |
| Rest of cast listed alphabetically: | |||
| John Carradine | ... | Sanatorium Inmate (voice) (uncredited) | |
| Don Rowan | ... | Juror (uncredited) | |
| Harry Strang | ... | Court Attendant (uncredited) | |
| Andrew Tombes | ... | Jury Foreman (uncredited) | |
Produced by
| Kenneth Macgowan | ... | associate producer |
| Darryl F. Zanuck | ... | producer |
Cinematography by
| Bert Glennon | ||
Editing by
| Herbert I. Leeds | ... | (as Herbert Levy) |
Art Direction by
| Mark-Lee Kirk | ||
Costume Design by
| Gwen Wakeling | ||
Second Unit Director or Assistant Director
| Fred Fox | ... | assistant director |
Art Department
| Thomas Little | ... | settings |
Sound Department
| W.D. Flick | ... | sound |
| Roger Heman Sr. | ... | sound (as Roger Heman) |
Costume and Wardrobe Department
| Sam Benson | ... | wardrobe (uncredited) |
Music Department
| Louis Silvers | ... | musical director |
Additional Crew
| Leicester Wagner | ... | publicist (uncredited) |
