Directed by
| Sam Newfield | ||
Writing Credits
| Fred Myton | ... | (original screenplay) |
Cast (in credits order) verified as complete
| George Zucco | ... | Dr. Lloyd Clayton / Dr. Elwyn Clayton | |
| Mary Carlisle | ... | Gayle Clayton | |
| Nedrick Young | ... | Dr. David Bentley | |
| Dwight Frye | ... | Zolarr | |
| Fern Emmett | ... | Kate | |
| Robert Strange | ... | Wilkins [Harper, in credits] | |
| Hal Price | ... | Sheriff Losen | |
| Sam Flint | ... | Minister | |
| Rest of cast listed alphabetically: | |||
| Jimmy Aubrey | ... | Townsman (uncredited) | |
| Rube Dalroy | ... | Townsman (uncredited) | |
| Frank Matts | ... | Townsman (uncredited) | |
| Merrill McCormick | ... | Townsman (uncredited) | |
| Milburn Morante | ... | Groceryman (uncredited) | |
 |
Rose Plumer | ... | Townswoman (uncredited) |
| Al St. John | ... | Townsman who finds Kate's Body (uncredited) | |
| Forrest Taylor | ... | The Evil One (introduction) (uncredited) | |
Produced by
| Sigmund Neufeld | ... | producer |
Music by
| Leo Erdody | ||
Cinematography by
| Jack Greenhalgh | ... | director of photography |
Editing by
| Holbrook N. Todd | ||
Makeup Department
| Harry Ross | ... | makeup artist |
Production Management
| Bert Sternbach | ... | production manager |
Second Unit Director or Assistant Director
| Melville De Lay | ... | assistant director |
Art Department
| Fred Preble | ... | set designer |
Sound Department
| Hans Weeren | ... | sound engineer |
Stunts
| Frank Matts | ... | stunts (uncredited) |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |
Music Department
| David Chudnow | ... | music supervisor |
