A bizarre cult that practices a ritual of sacrificing humans terrorizes a young doctor and his wife, who have just moved to the group's village.
| Directing | Amando de Ossorio | Director |
| Writing | Amando de Ossorio | Writer |
| Production | José Ángel Santos | Executive Producer |
| Editing | Pedro del Rey | Editor |
| Production | José Antonio Pérez Giner | Producer |
| Camera | Antonio Luengo | Still Photographer |
| Production | Modesto Pérez Redondo | Production Manager |
| Directing | Pedro Pardo | Assistant Director |
| Editing | Blanca Rodríguez | Assistant Editor |
| Costume & Make-Up | Ana Criado | Hairstylist |
| Costume & Make-Up | Cristóbal Criado | Makeup Artist |
| Camera | Alfredo Fernández | Camera Operator |
| Sound | Antón García Abril | Original Music Composer |
| Camera | Francisco Sánchez | Director of Photography |
