While searching for a solution to his serious health condition, David, a renowned neurosurgeon, discovers a sinister secret hidden in the past.
| Writing | Juan Carlos Medina | Screenplay |
| Directing | Juan Carlos Medina | Director |
| Writing | Luiso Berdejo | Screenplay |
| Production | Nikolai Semjevski | Location Manager |
| Production | François Cognard | Producer |
| Editing | Pedro Ribeiro | Editor |
| Crew | Antonio Higueruelo | Stunt Coordinator |
| Sound | Frédéric Le Louet | Sound Designer |
| Production | Pep Armengol | Casting |
| Crew | Raúl Romanillos | Special Effects |
| Lighting | José Luis Rodríguez | Gaffer |
| Production | Luci Lenox | Casting |
| Production | Antoine Simkine | Producer |
| Sound | Roger Orcau | Boom Operator |
| Crew | Ignacio Carreño | Stunt Coordinator |
| Production | Miguel A. Faura | Producer |
| Art | Iñigo Navarro | Production Design |
| Editing | David Calleja | Dialogue Editor |
| Costume & Make-Up | Ariadna Papió | Costume Designer |
| Camera | Alejandro Martínez | Director of Photography |
| Sound | Nicolas Becker | Foley Artist |
| Sound | Johan Söderqvist | Original Music Composer |
| Writing | Juan Carlos Medina | Screenstory |
| Production | Luís Galvão Teles | Co-Producer |
| Production | Adolfo Blanco | Co-Producer |
| Production | Manuel Monzón | Executive Producer |
| Production | Isaac Torrás | Executive Producer |
| Production | Gonçalo Galvão Teles | Executive Producer |
| Production | Rosa Bosch | Associate Producer |
| Production | Ester Velasco | Production Director |
| Directing | Manel Martínez | Assistant Director |
| Crew | Antoine Rabaté | Post-Production Manager |
| Sound | Jordi Rossinyol Colomer | Sound Recordist |
| Sound | Frédéric Le Louet | Sound Mixer |
| Sound | Branko Neškov | Sound Mixer |
| Costume & Make-Up | Mónica Alarcón Virgili | Makeup Artist |
| Costume & Make-Up | Lola Cañas | Hairstylist |
| Costume & Make-Up | David Martí | Special Effects Makeup Artist |
| Costume & Make-Up | Montse Ribé | Special Effects Makeup Artist |
| Visual Effects | Luís Tinoco | Visual Effects |
| Crew | Pablo Colau | Stunt Double |
| Camera | Verónica Amil | Camera Operator |
| Art | Deborah Chambers | Set Decoration |
| Costume & Make-Up | Coro Mateo | Costumer |
| Directing | Laura Hernández Vela | Script Supervisor |
| Directing | Lluís Quílez | Second Unit Director |
| Camera | Charly Guerrero | Key Grip |
| Camera | Lucía Faraig | Still Photographer |
| Camera | Albert Pijuan | Still Photographer |
| Editing | Elie Akoka | Color Grading |
