Spain, 1939. In the last days of the Spanish Civil War, the young Carlos arrives at the Santa Lucía orphanage, where he will make friends and enemies as he follows the quiet footsteps of a mysterious presence eager for revenge.
| Directing | Guillermo del Toro | Director |
| Writing | Guillermo del Toro | Screenplay |
| Sound | Javier Navarrete | Original Music Composer |
| Camera | Guillermo Navarro | Director of Photography |
| Editing | Luis de la Madrid | Editor |
| Production | Sara Bilbatúa | Casting |
| Sound | Oriol Tarragó | Sound Editor |
| Costume & Make-Up | Jorge Hernández Lobo | Makeup Designer |
| Costume & Make-Up | Fermín Galán | Hair Designer |
| Costume & Make-Up | José Vico | Costume Designer |
| Sound | Miguel Rejas | Sound Engineer |
| Sound | Salvador Mayolas | Sound Designer |
| Sound | Ray Gillon | Sound Mixer |
| Camera | Joaquín Manchado | Camera Operator |
| Art | César Macarrón | Production Design |
| Writing | Antonio Trashorras | Screenplay |
| Writing | David Muñoz | Screenplay |
| Production | Rosa Bosch | Co-Producer |
| Production | Michel Ruben | Associate Producer |
| Production | Agustín Almodóvar | Producer |
| Production | Bertha Navarro | Producer |
| Production | Esther García | Production Director |
| Directing | Pedro Manuel Lazaga | Assistant Director |
| Directing | Yuyi Beringola | Script Supervisor |
| Writing | Carlos Giménez | Storyboard |
| Camera | Miguel Bracho | Still Photographer |
| Lighting | Enrique Bello | Gaffer |
| Crew | Sergio Atanes | Stunt Coordinator |
| Crew | Reyes Abades | Special Effects Coordinator |
| Sound | Kiku Vidal | Foley Artist |
