After crooked nightclub owner murders a police informant, he blackmails his piano player to allow him to stay at his eccentric mother's boarding house.
| Editing | Thomas Richards | Editor |
| Writing | Louis Bromfield | Story |
| Writing | Lawrence Kimble | Screenplay |
| Production | Mark Hellinger | Producer |
| Directing | Lewis Seiler | Director |
| Production | Jack L. Warner | Executive Producer |
| Writing | Michael Fessier | Screenplay |
| Camera | Ernest Haller | Director of Photography |
| Production | Hal B. Wallis | Executive Producer |
| Crew | Edwin B. DuPar | Special Effects |
| Sound | Max Steiner | Music |
| Sound | Dolph Thomas | Sound |
| Sound | Heinz Roemheld | Original Music Composer |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Art | Max Parker | Art Direction |
| Sound | Edward B. Claypoole | Music |
| Production | Louis Baum | Unit Manager |
| Crew | Byron Haskin | Special Effects |
| Directing | Russell Saunders | Assistant Director |
| Sound | Leo F. Forbstein | Music Director |
| Costume & Make-Up | Howard Shoup | Costume Design |
| Sound | Howard Jackson | Music |
| Writing | Louis Bromfield | Book |
