BTS
- Blwyddyn: 1970
- Gwlad: Spain
- Genre: Thriller, Mystery
- Stiwdio:
- Allweddair: behind the scenes, series of murders, locked door, arts school, school project, murder in school, locked inside
- Cyfarwyddwr: Igor Morales
- Cast: Néstor Seller, Juan Paya, Lucía Agustín, Irene Hickey, Candela del Olmo, Álvaro Galarza Lima
