In a scene where Dr. Ricardo and Dr. Fernando are talking, Ricardo mentions he is reading the book "El mal y la violencia en el cine de Hitchcock". This is a meta-reference, as the book was written by the actor José Luis Panero, who plays Dr. Fernando in the film.
In the scene where the doctors inform the family about the medically inexplicable recovery of Mariló Giménez, the role of Mariló's mother is played by the real-life Mariló Giménez herself.
After some screenings of the film in Spain, part of the team would hold a post-screening Q&A session. They would bring a relic of the Saint to these events, and some devotees would touch it. On one occasion, a woman was cured of a severe and disabling wrist injury after seven months on medical leave and just one week before her scheduled surgery.
