Directed by
| Sam Newfield | ||
Writing Credits
| Fred Myton | ... | (original screenplay) |
Cast (in credits order)
| Johnny Downs | ... | Tom Gregory | |
| George Zucco | ... | Dr. Lorenzo Cameron | |
| Anne Nagel | ... | Lenora Cameron | |
| Glenn Strange | ... | Petro | |
| Sarah Padden | ... | Grandmother | |
| Gordon De Main | ... | Professor Fitzgerald (as Gordon DeMain) | |
| Mae Busch | ... | Susan | |
| Reginald Barlow | ... | Professor Warwick | |
| Robert Strange | ... | Professor Blaine | |
| Henry Hall | ... | Country Doctor | |
| Ed Cassidy | ... | Father (as Edward Cassidy) | |
 |
Eddie Holden | ... | Harper |
| John Elliott | ... | Professor Hatfield | |
| Slim Whitaker | ... | Policeman (as Charles Whitaker) | |
|
|
Gil Patric | ... | Lieutenant Detective |
Produced by
| Sigmund Neufeld | ... | producer |
Music by
| David Chudnow | ||
Cinematography by
| Jack Greenhalgh | ... | director of photography |
Editing by
| Holbrook N. Todd | ||
Art Direction by
| Fred Preble | ||
Makeup Department
| Harry Ross | ... | makeup artist |
Production Management
| Bert Sternbach | ... | production manager |
Second Unit Director or Assistant Director
| Melville De Lay | ... | assistant director |
Sound Department
| Hans Weeren | ... | sound engineer |
Special Effects by
| Eugene C. Stone | ... | special effects (as Gene Stone) |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |
