A patient is released from a mental hospital to help the police find a student who disappeared a few days ago.
| Directing | Cayetano Del Real | Director |
| Writing | Cayetano Del Real | Screenplay |
| Writing | Eduardo Mendoza | Novel |
| Writing | Eduardo Mendoza | Screenplay |
| Writing | Francisco G. Siurana | Screenplay |
| Production | Gonzalo Cores | Associate Producer |
| Sound | Joan Cassola | Music |
| Sound | Diego Cortés | Music |
| Camera | Jaume Peracaula | Director of Photography |
| Editing | Teresa Alcocer | Editor |
| Art | Carmen Núñez | Art Direction |
| Art | Rosa Español | Set Decoration |
| Costume & Make-Up | María Araujo | Costume Design |
| Costume & Make-Up | Pepita Araujo | Makeup Artist |
| Production | Paco Poch | Production Manager |
| Directing | Francisco G. Siurana | Assistant Director |
| Sound | Bárbara Becker | Sound Recordist |
| Camera | Josep M. Civit | Assistant Camera |
| Costume & Make-Up | Rosa Fernández | Wardrobe Master |
| Costume & Make-Up | Consol Tura | Wardrobe Master |