BTS
- సంవత్సరం: 1970
- దేశం: Spain
- శైలి: Thriller, Mystery
- స్టూడియో:
- కీవర్డ్: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- దర్శకుడు: Igor Morales
- తారాగణం: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
