Detective Casu and star serial killer

The irreverent Sardinian investigator is dealing with a serial killer who becomes famous for his signature, a star made with a sharp knife on the cheek of his victims. His friend gangster Bobore and the coroner Maia Booty will help to solve this complicated puzzle. Background from Sardinia with its colorful villages and quiet and Cagliari with its characteristic places of nightlife. The detective will fly to the States to a profiling course at the FBI, will be an experience full of surprise...