Thou Shalt Not Kill

The body of Gloria Severini is found on the floor of her living room by the cleaning lady. When Valeria arrives at the crime scene the victim's 20 year-old son can't be found. But is he really guilty?

Valeria conducts the investigation, but can't stop thinking about her mother, whom she has finally decided to ask, once and for all, the truth of why she killed her father. Lucia, put on the spot, tells her that her husband wanted to leave her, but she tells Giulio that she has once again lied to her daughter in order to protect her.

An ordinary administrative case: a man has been run over on the highway by a hit-and-run driver. There would be no need for Valeria, but Inspector Ferro understands right from the start that things aren't as simple as they seem.

The investigation is also a chance for her to get away from her family: the last altercation with her mother has left her disappointed and bitter and she wants nothing to do with her anymore. But, after making peace with Lombardi, Valeria returns home to her uncle Giulio, the man who raised her like a daughter.

Giampaolo Petrone, the openly gay owner of a nightclub, is found dead. The man was not in close contact with his family, who had never accepted the fact that he was gay, and so Inspector Ferro begins questioning his circle of friends and acquaintances.

Valeria wants to solve the case and submit a transfer request. When her uncle Giulio finds out he is shaken and confides in Lucia who, on the other hand, seems happy about her daughter's decision. Alone, the two share a passionate kiss.

On the night that she was killed, Irene played her final concert. First violin in an orchestra and the daughter of Adele Rubini, the owner of a prestigious theatre, she was a talented and beautiful young woman.

This time, however, Valeria isn't there to question those close to the victim as she is in Rome regarding her imminent transfer. Andrea Russo, her right hand man, sees to it, not as talented but definitely just as interesting. To convince Valeria to stay Lombardi promises that they will reopen the case of her father's murder.

A university math professor, Emanuele Sarti, is found dead in a tunnel inhabited by a homeless man in Valentino Park. Strange mathematical formulas are discovered written on the walls of the tunnel: improbable that it's a coincidence.

After deciding to remain in Turin, Valeria returns to the crime scene of her fathers murder and discovers a piece of evidence that has been overlooked in the past: that night, in the house on the lake, in addition to her mother and father, a third person has been present.

The entire Rocchi family is found dead in a hillside villa and all evidence points to a terrible case of homicide-suicide engineered by Sandro, the head of the family. But the youngest, Samuele, only six years old, is found alive and well in the trunk of the car. What if the whole thing was staged?

Valeria is riddled with doubts about her own case as well. So she decides to confront her mother and learns that Mario wasn't her real father. But this isn't the whole truth, Lucia is still hiding something from her...