Samuele Torti confesses to the murder of a young woman. He also admits another crime, the murder of Livia, but when the police find the body, it brings more questions than answers.

The death of Francesca Molino, an oncologist respected by her colleagues and beloved by her patients, at first suggests a suicide. Valeria understands that something is wrong.

A dead woman is found in the parish church. Valeria investigates in the neighbouring monastery, where more than one of the residents already has a criminal record.