BTS
- वर्ष: 1970
- देश: Spain
- शैली: Thriller, Mystery
- स्टुडिओ:
- कीवर्ड: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- संचालक: Igor Morales
- कास्ट: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
