True story of the doctor who considered it was not immoral to search for a drug that would cure syphillis.
| Editing | Warren Low | Editor |
| Directing | William Dieterle | Director |
| Camera | James Wong Howe | Director of Photography |
| Sound | Max Steiner | Original Music Composer |
| Writing | Heinz Herald | Screenplay |
| Writing | Norman Burnstine | Screenplay |
| Writing | John Huston | Screenplay |
| Production | Wolfgang Reinhardt | Associate Producer |
| Production | Hal B. Wallis | Executive Producer |
| Art | Carl Jules Weyl | Art Direction |
| Costume & Make-Up | Howard Shoup | Costume Design |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Production | Al Alleborn | Unit Manager |
| Directing | Irving Rapper | Assistant Director |
| Directing | Jack Sullivan | Assistant Director |
| Art | Armor Marlowe | Props |
| Sound | Robert B. Lee | Sound |
| Crew | Robert Burks | Special Effects |
