An empty barge drifts downriver with the owner missing. That same night Inspector Soneri is called to investigate the murder of the boatman's brother. The brothers served together in the fascist militia fifty years earlier and Soneri must navigate ancient loyalties and deep-rooted rivalries before he can find out the truth.
In his investigation of the murder of an elderly friend, Inspector Soneri finds that he totally misunderstood who she was. The key to solving her murder may lie in understanding more about her illicit activities, but he fears uncovering a deeper mystery with ties to his marriage and his most cherished sentiments.
Following the death of a former police inspector, Inspector Soneri needs to understand what made a valorous officer go crooked. During the investigation he finds himself battling friend and colleague Angela, who’s defending one of the suspects. The suspect’s a chronic drug user and a liar, but even Soneri recognizes that something doesn’t add up.
Inspector Soneri finds himself with an all-female case, filled with men who are too much in love, girls who have messy pasts and fellow officers with time-worn secrets. To solve the case and save the life of his friend Angela, he must investigate the darkest side of what has always been a mystery for him: women.
Two senior citizens are found at the bottom of the River Po in their car. Their only private pleasure was high-speed driving in a luxury sports car they kept in the garage; they had no enemies. Who could have it in for such a quiet-living couple?
A frightened boy hides in the bushes next to the body of a woman washed up onto the banks of the river. The child responds only to Inspector Soneri, who agrees to look after him until social services can step in.
Inspector Soneri investigates a hit-and-run fatality committed by a married man who had a busy social life outside the home. Soneri consults a local hairdresser, who keeps up with the social lives of all the town's residents.
Angela travels back to Kiev for personal reasons, while Inspector Soneri investigates the brutal killing of a prostitute. She had recently taken on the job of a call girl in search of glamour and security, and her body was found decomposing in her house months after her murder.
A teenage girl from a well-known family is found killed. Inspector Soneri's friend is the significant other of the victim's mother, so he ditches vacation plans to lead the investigation as a personal favor.
Inspector Soneri is all ready for reassignment to Rome, when a case comes up he can't walk away from. A high-profile attorney is found dead in his apartment, and there seems to be a connection between the victim and Soneri's ex-girlfriend Angela.
Soneri's ex-girlfriend Angela wakes up in a strange bed next to a former client who's been stabbed to death. The murdered man is a photographer with a sketchy past and links to drug trafficking. Soneri claims he can work impartially on the investigation, but the judge assigned to the case questions his motives.
Soneri gets transferred to Torino, where his first case involves a beautiful woman found strangled in a car that's plunged off a cliff. He also becomes involved in the lives of two young women: a wily and precocious street urchin whom he accidentally hit with his car and the dedicated ER physician who treats her.
A gang of hooded youths has been stealing from luxurious villas in the hills, leaving a black hood behind as a signature. When a young man from an aristocratic family is found murdered, it's easy to blame the hooded thieves. While working the case, Soneri also has to deal with the challenges of being Immacolata's caretaker.
Immacolata is found off a pier practically beaten to death. When he learns that she's witnessed a murder, Soneri urges Chiara to bring her to the southern seaside town of Otranto, where he's gone to escape for a few days. He offers to hide them while he keeps Immacolata from becoming a murder victim herself.