BTS
- Aasta: 1970
- Riik: Spain
- Žanr: Thriller, Mystery
- Stuudio:
- Märksõna: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- Direktor: Igor Morales
- Osades: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
