Tras el cristal (1987)
Tras el cristal is a 1987 Spanish film written and directed by Agustí Villaronga and starring Günter Meisner, Marisa Paredes and David Sust. The plot follows an ex-Nazi sadistic child abuser who is now paralyzed and depending on an iron lung to live. A young man who comes to nurse him was one his former victims years before. The film was inspired by the history of Gilles de Rais. With its theme mixing Nazism, pedophilia, torture and homosexuality, the film was highly controversial.
More at Wikipedia.