Inspector Valeria Ferro, who is struggling with her own demons as phantoms from her past return, grabs the reins of the investigation when a teenage girl's body is found in a flooded basement in Turin
The investigation into teenage diver Sara Damiano's death continues: was it an accident or murder? Valeria seeks to find out what the motive could possibly be for killing an innocent teenage girl.
The murder of Guglielmo Mantovani appears to be the tragic consequence of a burglary gone wrong. But the man's three children seem to be hiding something as none of them looks particularly distraught.
The Mantovani clan's secrets unravel. Knowing her mother Lucia is about to come home from jail, Valeria goes to live with her boyfriend and boss Giorgio Lombardi, who arrested Lucia 17 years earlier.
Graziano Torri calls the police because his wife Alessandra, who's just told him she's pregnant, is missing. Valeria arrives at their home and finds a recently dug hole that's been filled with cement.
Valeria's brother Guido urges her to participate in the life of her family, which now includes Lucia. But after a tense altercation, Lucia understands her family will never be able to forgive her.
When the body of 22-year-old Stefania Castoldi is found on the banks of the River Po, Valeria questions her lover Michele, finding a trail that leads right to the halls of a religious community nearby
As the investigation into Stefania's murder gathers pace, Valeria must work out where her own mother is. She finds Lucia at the home of her former cell mate Monica but is it too late to build bridges?
Amina Mansour, a young woman of Egyptian heritage, is found badly injured after being attacked with a knife. Amina has an Italian boyfriend but her family's way of life is still anchored in tradition.
Just when peace seems to have been restored to the Ferro family, Lucia's former cell mate Monica pays a visit to their house and upsets the harmony that mother and daughter were trying to re-establish
Arianna Lancise finds her four-year-old daughter dead in the car where she had briefly left her. A lack of clues leads the police and the public to lay blame on Arianna, but Valeria is unconvinced.
As Valeria attempts to prove young mother Arianna's innocence, Monica insists that Lucia has always been innocent as well: she wasn't the perpetrator who killed Mario, her husband and Valeria's father
Gloria Severini's body is found on her living-room floor by the cleaning lady. When Valeria arrives at the crime scene, the victim's 20-year-old son, who has a hot-headed reputation, can't be found.
Valeria finally decides to ask her mother for the truth about why she killed her father. Lucia, put on the spot, reveals her husband wanted to leave her, but confesses to Giulio that she's lied again.
When a man is run over on the highway by a hit-and-run driver, there should be no need for Valeria to investigate further, but she quickly grasps that aspects of the case aren't as simple as they seem
The investigation provides a chance for Valeria to get away from her family. But after making peace with Lombardi, she returns home to see her uncle Giulio, the man who raised her like a daughter.
Nightclub owner Giampaolo Petrone is found dead on an industrial estate. He wasn't close to his family, who never accepted his sexuality, so Valeria questions his circle of friends and acquaintances.
Valeria works towards solving the Petrone case and submits a transfer request. When Giulio finds out, he is shaken and confides in Lucia, who surprisingly seems happy about her daughter's decision.
Musician Irene Ferrara, the first violin in a noted orchestra, plays at a classical concert on the night she's killed. She is a talented and beautiful young woman. Who would want her dead, and why?
Valeria isn't available to question those close to Irene, as she is in Rome arranging her transfer, so Andrea takes over. To get Valeria to stay, Lombardi promises to reopen her father's murder case.
A university maths professor, Emanuele Sarti, is found dead in a tunnel inhabited by a homeless man in Valentino Park. Strange mathematical formulae are discovered written on the walls nearby.
Valeria returns to the scene of her father's death, where she finds a trace of blood that had been overlooked. It seems a third person was present in the house on the lake on that night years before.
Members of the Rocchi family are found dead in a villa. Evidence points to a homicide-suicide case engineered by the head of the clan. But six-year-old Samuele is rescued alive from the boot of a car.
Valeria is riddled with doubts about her investigation of her family. She confronts her mother, who makes a shocking revelation, but it isn't the whole truth. Lucia is still hiding something from her.