An American occult novelist battles to save the soul of a young girl from a group of Satanists, led by an excommunicated priest, who plan on using her as the representative of the Devil on Earth.
| Directing | Peter Sykes | Director |
| Writing | Christopher Wicking | Screenplay |
| Writing | John Peacock | Adaptation |
| Writing | Dennis Wheatley | Novel |
| Production | Roy Skeggs | Producer |
| Sound | Paul Glass | Original Music Composer |
| Camera | David Watkin | Director of Photography |
| Editing | John Trumper | Editor |
| Production | Irene Lamb | Casting |
| Art | Don Picton | Art Direction |
| Costume & Make-Up | George Blackler | Makeup Artist |
| Costume & Make-Up | Eric Allwright | Makeup Artist |
| Crew | Les Bowie | Special Effects |
| Camera | Ray Hearne | Still Photographer |
