 | James Craig als Russ Bradford |
 | Gloria Talbott als Susan Winter |
 | Lon Chaney Jr. als Martin 'Marty' Melville |
 | Tom Drake als Lee Brand |
 | Duncan 'Dean' Parkin als The Cyclops |
 | Vicente Padula als The Governor |
| Marlene Kloss als The Salesgirl |
| Manuel López als The Policeman |
| Bert I. Gordon | Writer |
| Bert I. Gordon | Director |
| Carlo Lodato | Editor |
| Bert I. Gordon | Producer |
| Carlie Taylor | Makeup Artist |
| Ira H. Morgan | Director of Photography |
| Henry Schrage | Associate Producer |
| Albert Glasser | Original Music Composer |
| Ray Taylor Jr. | Assistant Director |
| Henry Schrage | Production Manager |
| Bert I. Gordon | Special Effects |
| Harry L. Fraser | Assistant Director |
| Jack H. Young | Special Effects Makeup Artist |
| Flora M. Gordon | Producer's Assistant |
