Whitney Cameron is in a quandary: he's attracted to his beautiful sister-in-law, Lynn, but also harbors serious suspicions about her. Her husband, Cameron's brother, died under mysterious circumstances, and now that the death of her stepchild, Polly, has been attributed to poisoning, he suspects that Lynn is after his late brother's estate, and killing everyone in her way.
| Production | Michael Abel | Producer |
| Editing | William B. Murphy | Editor |
| Camera | Leo Tover | Director of Photography |
| Directing | Andrew L. Stone | Director |
| Art | Albert Hogsett | Art Direction |
| Art | Fred J. Rode | Set Decoration |
| Art | Lyle R. Wheeler | Art Direction |
| Writing | Andrew L. Stone | Screenplay |
| Costume & Make-Up | Ben Nye | Makeup Artist |
| Sound | Lionel Newman | Music Director |
| Visual Effects | Ray Kellogg | Visual Effects |
| Sound | Edward B. Powell | Orchestrator |
| Costume & Make-Up | Charles LeMaire | Wardrobe Master |
| Sound | Leigh Harline | Original Music Composer |
| Sound | Harry M. Leonard | Sound |
| Sound | W. D. Flick | Sound |
| Directing | Ad Schaumer | Assistant Director |
