BTS
- İl: 1970
- Ölkə: Spain
- Janr: Thriller, Mystery
- Studiya:
- Açar söz: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- Direktor: Igor Morales
- Oyuncu: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
