 | Eduardo Noriega als César |
 | Penélope Cruz als Sofía |
 | Chete Lera als Antonio |
 | Fele Martínez als Pelayo |
 | Najwa Nimri als Núria |
 | Gérard Barray als Duvernois |
 | Jorge de Juan als Encargado L.E. |
 | Miguel Palenzuela als Commisario |
 | Pedro Miguel Martínez als Médico Jefe |
 | Ion Gabella als Recluso paranoico |
| Joserra Cadiñanos als Guardia |
 | Tristán Ulloa als Camarero |
 | Pepe Navarro als Presentador TV |
| Walter Prieto als Médico 2 |
| Mateo Gil | Screenplay |
| Alejandro Amenábar | Screenplay |
| Wolfgang Burmann | Art Direction |
| Concha Solera | Costume Design |
| José Luis Cuerda | Producer |
| Mariano Marín | Original Music Composer |
| María Elena Sáinz de Rozas | Editor |
| Carola Angulo | Set Decoration |
| Fernando Bovaira | Producer |
| Alejandro Amenábar | Original Music Composer |
| Alejandro Amenábar | Director |
| Hans Burmann | Director of Photography |
| Andrea Occhipinti | Associate Producer |
| Alain Sarde | Associate Producer |
| Ana Amigo | Associate Producer |
| Francisco Ramos | Key Grip |
| Mateo Gil | Second Unit Cinematographer |
| Carmen Soriano | Script Supervisor |
| Patrick Ghislain | Sound Mixer |
| Julien Naudin | Sound Effects Editor |
| Ana Cuerda | Assistant Costume Designer |
| Vázquez Hermanos | Property Master |
| Mar de Frutos | Location Manager |
| Pablo Carrión Bautista | Electrician |
| Juan Carrión | Gaffer |
| Emiliano Otegui | Production Manager |
| José Vinader | Sound |
| Antonio Gómez | Carpenter |
| Félix Fontal | Transportation Coordinator |
| Jaume Puig | Dolby Consultant |
| Belén Arsuaga | Visual Effects |
| Pedro Jesús De la Fuente | Construction Coordinator |
| Paca Almenara | Makeup Designer |
| Ramón Moya | Set Decoration |
| José G. Donado | Painter |
| Daniel Goldstein | Sound Designer |
| Sergio Burmann | Boom Operator |
| Javier Aramburu | Thanks |
| Sylvie Imbert | Hairstylist |
| Pelayo Gutiérrez | Sound Editor |
| Pablo Bürmann | First Assistant Camera |
| Sylvie Imbert | Makeup Artist |
| Natalia Montes | Storyboard |
| Eva Muslera | Production Accountant |
| Alberto Esteban | Visual Effects Coordinator |
| Alberto García | Production Assistant |
| Carlos Montero | Camera Trainee |
| María Teresa Payero | Production Secretary |
| Elisabeth Adánez | Assistant Makeup Artist |
| Juan Carlos Cuello | Music Producer |
| Ignacio Borja | Graphic Designer |
| Natalia Sáinz de Rozas | Assistant Editor |
| Jesús Alonso | Assistant Production Manager |
| Miguel Ángel Bardavio | Second Assistant Camera |
| Carlos J. Santos | Title Designer |
| Mario Klemens | Conductor |
| Alberto Esteban | Visual Effects |
| Ignacio Gutiérrez-Solana | Assistant Director |
| Ricardo Steinberg | Production Sound Mixer |
