Baskenland, Spanje, 1843. Een politieagent arriveert in een klein dorpje in Álava om een mysterieuze smid te onderzoeken die diep in de bossen alleen woont.
| Writing | José Miguel de Barandiarán | Short Story |
| Writing | Asier Guerricaechevarría | Screenplay |
| Directing | Paul Urkijo Alijo | Director |
| Production | Luis de Oza | Producer |
| Production | Álex de la Iglesia | Producer |
| Art | Izaskun Urkijo Alijo | Art Direction |
| Production | Paul Urkijo Alijo | Producer |
| Editing | Paul Urkijo Alijo | Editor |
| Sound | Pascal Gaigne | Original Music Composer |
| Production | Kiko Martínez | Producer |
| Production | Laurent Fumeron | Producer |
| Production | Daniel Goroshko | Producer |
| Camera | Gorka Gómez Andreu | Director of Photography |
| Production | Ortzi Acosta | Producer |
| Production | Gorka Gómez Andreu | Producer |
| Art | Paula de Granvar Palomares-Martínez | Assistant Art Director |
| Writing | Paul Urkijo Alijo | Screenplay |
| Production | Rodolphe Sanzé | Producer |
| Sound | Pablo Bueno | Sound |
| Sound | Iosu González | Sound Designer |
| Production | Carolina Bang | Producer |
| Costume & Make-Up | Nerea Torrijos | Costume Designer |
| Production | Carolina Bang | Executive Producer |
| Production | Kevin Iglesias | Associate Producer |
| Production | Miguel Ángel Jiménez | Executive Producer |
| Production | Kiko Martínez | Executive Producer |
| Production | Сергей Сельянов | Executive Producer |
| Production | Paul Urkijo Alijo | Executive Producer |
| Production | Txabe Atxa | Casting |
| Production | Timothy Cubbison | Casting |
| Costume & Make-Up | Beatriz López | Makeup & Hair |
| Production | Javier Arsuaga Lekuona | Production Manager |
| Directing | Miguel Ángel Jiménez | Assistant Director |
| Visual Effects | Mariano García Ojeda | Special Effects Supervisor |
| Visual Effects | David Heras | Visual Effects Supervisor |
| Lighting | Txema Areizaga Orube | Gaffer |
| Camera | Txarli Argiñano | Camera Operator |
| Directing | Jaione Daubagna Urrechu | Script Supervisor |
| Production | Elena Gozalo | Delegated Producer |
| Production | Aintzane Pérez del Palomar | Delegated Producer |
| Crew | Ortzi Acosta | Stunt Coordinator |
