BTS
- Jaar: 1970
- Land: Spain
- Genre: Thriller, Mystery
- Studio:
- Sleutelwoord: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- Direkteur: Igor Morales
- Gooi: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
