 | Joan Collins als Marilyn Fryser |
 | Robert Lansing als Dan Stokely |
 | John David Carson als Joe Morrison |
 | Albert Salmi als Sheriff Art Kincade |
 | Jacqueline Scott als Margaret Ellis |
 | Pamela Susan Shoop als Coreen Bradford |
 | Robert Pine als Larry Graham |
 | Edward Power als Charlie Pearson |
 | Brooke Palance als Christine Graham |
 | Tom Fadden als Sam Russell |
 | Irene Tedrow als Velma Thompson |
 | Harry Holcombe als Harry Thompson |
| Jack Kosslyn als Thomas Lawson |
| Ilse Earl als Mary Lawson |
| Janie Gavin als Ginny |
| Norman Franklin als Anson Parker |
 | Florance McGee als Phoebe Russell |
| Jim Wheelus als Crewman |
| Mike Armstrong als Jim |
| Tom Ford als Pete |
| Charles Redd als Taxi Driver |
| Bert I. Gordon | Director |
| Bert I. Gordon | Screenstory |
| Samuel Z. Arkoff | Executive Producer |
| Bert I. Gordon | Producer |
| Dana Kaproff | Original Music Composer |
| Reginald H. Morris | Director of Photography |
| Michael Luciano | Editor |
| H.G. Wells | Story |
| Jack Turley | Screenplay |
| Betty Martin | Casting |
| Charles Rosen | Production Design |
| Anthony C. Montenaro | Set Decoration |
| Ellis Burman Jr. | Makeup Effects |
| Roy L. Downey | Special Effects |
| Bert I. Gordon | Visual Effects |
| Neil A. Machlis | Unit Production Manager |
| Billy Hank Hooker | Stunts |
| Hugh Hooker | Stunts |
| David McGiffert | Assistant Director |
| Mel Efros | Assistant Director |
| Adrienne Bourbeau | Second Assistant Director |
| James Quinn | Second Assistant Director |
| Vincent Saizis | Camera Operator |
| Lou Noto | First Assistant Camera |
| William D. Barber | Second Assistant Camera |
| Lee Heckler | Gaffer |
| Dick Deats | Key Grip |
| Ken Miller | Dolly Grip |
| Buddy Joe Hooker | Stunt Coordinator |
| Dominick Bruno | Property Master |
| Tommy Magglos | Assistant Property Master |
| Joanne Haas | Costumer |
| Ellis Burman Jr. | Special Effects Makeup Artist |
| Guy Del Russo | Makeup Artist |
| Romaine Greene | Hairdresser |
| James E. Foote | Transportation Captain |
| Julian F. Myers | Publicist |
| Bill Berry | Negative Cutter |
| Tom Finan | Assistant Editor |
| William L. Manger | Dialogue Editor |
| Bodie Chandler | Music Coordinator |
| Ving Hershon | Music Editor |
