In the small New England town of Galen, a young teenage boy claims he has dreams of young women being brutally raped and murdered. A doctor and the local sheriff discover that the boy's dreams are real and that a sinister occult might be behind the brutal murders. They must track down the vicious killer, who may be the indestructible incarnation of a demon spawned from hell.
| Directing | John Hough | Director |
| Writing | George Franklin | Screenplay |
| Writing | Ray Russell | Novel |
| Writing | John Cassavetes | Screenplay |
| Production | Marc Boyman | Producer |
| Production | John M. Eckert | Producer |
| Production | Stephen J. Friedman | Executive Producer |
| Sound | Stanley Myers | Music |
| Camera | Albert J. Dunk | Director of Photography |
| Editing | George Appleby | Editor |
| Production | Deirdre Bowen | Casting |
| Production | Clare Walker | Casting |
| Art | Edwin Watkins | Production Design |
| Art | Elinor Fairless Hawksley | Art Direction |
| Art | Susan Longmire | Art Direction |
| Art | Hilton Rosemarin | Set Decoration |
| Costume & Make-Up | James Kielev | Hairstylist |
| Costume & Make-Up | Katherine Southern | Makeup Supervisor |
| Costume & Make-Up | Maureen Sweeney | Special Effects Makeup Artist |
| Production | Mary Kahn | Production Manager |
| Directing | Louise Casselman | Assistant Director |
| Directing | Robert Wertheimer | Assistant Director |
| Directing | David Hood | First Assistant Director |
