A young woman participates (unknowingly) in a satanic ceremony and gets possessed by the spirit of her late father.
| Directing | Juan Bosch | Director |
| Writing | Paul Naschy | Story |
| Art | Alfonso de Lucas | Art Direction |
| Writing | Paul Naschy | Screenplay |
| Writing | Juan Bosch | Screenplay |
| Camera | Francisco Sánchez | Director of Photography |
| Art | Alfonso de Lucas | Set Decoration |
| Writing | Jordi Gigó | Writer |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Costume & Make-Up | Hipólita López | Hairstylist |
| Costume & Make-Up | Manolita Ponte | Makeup Artist |
| Costume & Make-Up | Adolfo Ponte | Makeup Artist |
| Sound | Alberto Argudo | Original Music Composer |
| Camera | Javier Ferrer | Assistant Camera |
