Pete Marshall is sent as a replacement to the mountain district town of Plainville when a public opinion surveyor who went there goes missing. Visiting the hillbilly family of Mamie Fleagle, Pete begins to suspect that she and her two sons have murdered the surveyor. Pete then believes that Mamie is slowly poisoning wealthy Grandma Fleagle, who has put a vital clue to her fortune in a nonsensical embroidered sampler.
| Writing | Jack Moffitt | Story |
| Writing | Lou Breslow | Screenplay |
| Directing | George Marshall | Director |
| Crew | Audrey Scott | Stunts |
| Sound | Gene Merritt | Sound Recordist |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Camera | Theodor Sparkuhl | Director of Photography |
| Visual Effects | Gordon Jennings | Visual Effects |
| Art | George Sawley | Set Decoration |
| Camera | Lothrop B. Worth | Additional Camera |
| Sound | Don Johnson | Sound Recordist |
| Sound | George Parrish | Orchestrator |
| Visual Effects | Paul K. Lerpae | Visual Effects |
| Sound | Robert Emmett Dolan | Original Music Composer |
| Editing | LeRoy Stone | Editor |
| Art | Hans Dreier | Art Direction |
| Art | William Flannery | Art Direction |
| Directing | Arthur S. Black Jr. | Assistant Director |
| Crew | Betty Danko | Stunts |
| Production | E.D. Leshin | Associate Producer |
| Costume & Make-Up | Mary Kay Dodson | Wardrobe Designer |
| Crew | Joseph J. Lilley | Additional Music |
| Sound | Philip Wisdom | Scoring Mixer |
