 | Boris Karloff als Phillip Knight |
 | Beverly Tyler als Sarah Adams |
 | Murvyn Vye als Barney Finch |
 | Elisha Cook Jr. als Martin Schuyler |
 | Rhodes Reason als Matthew Gunn |
 | Jean Engstrom als Claire Winter |
 | Friedrich von Ledebur als Native Chief |
 | Glenn Dixon als Mitchell |
| Owen Cunningham als Howard Carlton |
| Herbert Patterson als Dr. Wilding |
| Jerry Frank als Vickers |
 | Adam West als Weather Station #4 Radio Operator |
| Jack T. Collis | Production Design |
| Richard H. Landau | Writer |
| Howard W. Koch | Producer |
| William Margulies | Director of Photography |
| John F. Schreyer | Editor |
| Reginald Le Borg | Director |
| Aubrey Schenck | Executive Producer |
| Les Baxter | Original Music Composer |
| Joe Edmondson | Sound Recordist |
| Les Baxter | Music Director |
| Jack Rabin | Special Effects |
| Charles Cooper | Sound Re-Recording Mixer |
| Charles S. Schilling | Sound Editor |
| Carlo Lodato | Music Editor |
| Mary Westmoreland | Hairstylist |
| Louis DeWitt | Special Effects |
| Ted Coodley | Makeup Artist |
| Paul Wurtzel | Assistant Director |
