Watch Online Movies HD Fmovies. Short film inspired by the book "El Túnel" from Ernesto Sabato, which tells the story about Juan Pablo Castel, a reclusive and introspective painter who becomes obsessed with a woman named María Iribarne. Castel's fixation leads him to a tumultuous relationship with María, marked by jealousy, possessiveness, and paranoia, starting to break not only his life, but also his mental state.