An occult criminologist investigates a businessman who dabbles in the black arts while trying to survive against a powerful demon and an evil cult.
Clive Donner | Director |
Gene Roddenberry | Screenplay |
Gene Roddenberry | Story |
Samuel A. Peeples | Screenplay |
Gordon Scott | Producer |
Gene Roddenberry | Executive Producer |
Danny Steinmann | Associate Producer |
John Cameron | Original Music Composer |
Arthur Ibbetson | Director of Photography |
Peter Tanner | Editor |