A notoriously harsh French judge, vacationing at a luxury resort, finds his holiday interrupted when a mysterious killer begins murdering those in and around the hotel.
| Directing | Jorge Grau | Director |
| Writing | Jorge Grau | Screenplay |
| Editing | Rosa G. Salgado | Editor |
| Sound | Antonio Pérez Olea | Original Music Composer |
| Camera | Fernando Arribas | Director of Photography |
| Writing | Juan Tébar | Screenplay |
| Writing | Guy de Maupassant | Story |
| Production | Espartaco Santoni | Producer |
| Art | José Antonio de la Guerra | Set Decoration |
| Costume & Make-Up | Carlos Paradela | Makeup Artist |
| Costume & Make-Up | Peris Hermanos | Costume Design |
