Montalbano is visiting Livia in Boccadasse when he is called back to Vigata to investigate the murder of a 70-year-old prostitute - as well as disturbing accusations at an elementary school.

A man's body is found inside an industrial pipe on a building site. Montalbano and Fazio manage to identify the victim and try to contact his missing wife. Meanwhile, journalist Lucia Gambardella reaches out to Montalbano with information on a local corruption ring involving fraudulent building contracts.