A terror is stalking the land: people are disappearing daily, their bodies appearing covered in savage gashes coupled with precise surgical cuts. The legend of the 'Werewolf of Allariz' spreads across the land like wildfire. When Barbara (Elsa Pataky) falls in love with travelling vendor Manuel Romasanta, she is at first besotted with him - but soon begins to be suspicious of him. What has happened to her sister, who - after being escorted by Romasanta to the city - seems to have disappeared forever.
| Directing | Paco Plaza | Director |
| Writing | Elena Serra | Screenplay |
| Writing | Alberto Marini | Screenplay |
| Production | Carlos Fernández | Executive Producer |
| Production | Julio Fernández | Executive Producer |
| Production | Julio Fernández | Producer |
| Sound | Mikel Salas | Original Music Composer |
| Editing | David Gallart | Editor |
| Writing | Alfredo Conde | Story |
| Production | Carola Ash | Associate Producer |
| Production | Zaza Ceballos | Associate Producer |
| Production | Teresa Gefaell | Line Producer |
| Production | José Luis Jiménez | Line Producer |
| Production | Stephen Margolis | Co-Executive Producer |
| Production | Albert Martínez Martín | Co-Producer |
| Writing | Brian Yuzna | Creative Producer |
| Crew | Javier Salmones | Cinematography |
| Production | Pep Armengol | Casting Director |
| Production | Carol Dudley | Casting Director |
| Art | Balter Gallart | Production Design |
| Art | Balter Gallart | Art Direction |
| Costume & Make-Up | Sonia Grande | Costume Designer |
| Costume & Make-Up | Elvira Guijarro | Assistant Hairdresser |
