Russian front, winter 1943. Soldier Arturo Andrade and Sergeant Fernando Espinosa are commissioned to investigate a mysterious murder while the Spanish Blue Division of the German Army endures the fierce counterattack of the Red Army.
| Camera | Alfredo Mayo | Director of Photography |
| Production | José Velasco | Producer |
| Editing | Mapa Pastor | Editor |
| Production | Gerardo Herrero | Producer |
| Directing | Gerardo Herrero | Director |
| Writing | Ignacio del Valle | Novel |
| Crew | Reyes Abades | Special Effects |
| Writing | Nicolas Saada | Screenplay |
| Production | Camilla-Valentine Isola | Casting |
| Costume & Make-Up | Kenyar Padilla | Hairstylist |
| Directing | María Guerra | Script Supervisor |
| Visual Effects | Ignacio Lacosta | Visual Effects Coordinator |
| Art | Rasa Rimkutė | Art Department Coordinator |
| Costume & Make-Up | Eglė Navickaitė | Costume Supervisor |
| Editing | Sergio González | Dialogue Editor |
| Costume & Make-Up | Eglė Mikalauskaitė | Makeup Designer |
| Sound | Carlos Schmukler | Supervising Sound Editor |
| Crew | Rodrigo Busto | Property Master |
| Crew | Ramūnas Rastauskas | Property Master |
| Camera | Diego López Calvin | Still Photographer |
| Sound | Manuel Corrales | Foley |
| Sound | Diego Garrido | Sound Re-Recording Mixer |
| Costume & Make-Up | Saulius Proscevičius | Set Costumer |
| Production | Antonio Saura | Executive Producer |
| Production | Javier López Blanco | Producer |
| Production | Josean Gómez | Production Director |
| Production | Ramūnas Škikas | Co-Producer |
| Directing | David Pareja | First Assistant Director |
| Costume & Make-Up | Lena Mossum | Costume Designer |
| Production | Dalia Survilaitė | Casting |
| Art | Edou Hydallgo | Art Direction |
| Sound | Lucio Godoy | Original Music Composer |
| Production | Mariela Besuievsky | Executive Producer |
| Production | Antonia Nava | Co-Producer |
| Production | Winnie Baert | Delegated Producer |
| Sound | Eduardo Esquide | Sound Engineer |
| Production | Darius Jarasunas | Production Manager |
| Production | Carlos Rodríguez | Producer |
| Camera | David Mayo | Camera Operator |
| Production | Iñaki Ros | Production Manager |
| Camera | Rolandas Joneliūkštis | Focus Puller |
| Art | Raimondas Dičius | Art Direction |
| Visual Effects | Reyes Abades | Special Effects Supervisor |
| Art | Luis Pastor | Assistant Set Decoration |
| Camera | Daniel Sánchez | Assistant Camera |
| Camera | Audrius Budrys | Assistant Camera |
| Directing | Angie Paul Risque | Third Assistant Director |
