An accident occurs in a lodge. Marie arrives to investigate and it is concluded that it is not an accident. Father Castell is sent to investigate a robbery in a church. It seems that both cases are related and they begin to work together.
After finding the corpse of a person who worked in a shop on the "Camino de Santiago", Marie arrives to investigate. Father Castell also finds out about this and meets Marie near a church next to the shop, and they both work on the case.
After an alleged suicide at a Jesuit boarding school, Marie arrives to investigate the case. For his part, Father Castell is informed of this event, and meets Marie, who asks for his support.
After finding a hand on a grave, Marie arrives to investigate the case with an old colleague. Father Castell also finds out about this event and meets Marie at the cemetery, and they both work on the case.