Nero a metà

During Malik and Olga's promotion ceremony, an SUV rams an organ transport car with the aim of stealing the heart intended for a 16-year-old patient. The Charter immediately sends Malik to the scene. Meanwhile, not far away, an accident occurs. Another SUV kills agent Paolo Moselli.

Carlo continues the investigation into Paolo's death, given that it has been proven that it has nothing to do with extortion related to the heart. He gets Marta to give him his son's cell phone and computer and entrusts them to Olga to get an account. Carlo asks his trusted informant, Ottavia, for help.

The discovery of Olga's body deeply disturbs the entire team. Many clues of guilt soon lead to Muzo, who does not hide the fact that he asphyxiated his wife with repeated scenes of jealousy but proclaims his innocence. Malik, aware of these arguments.

An undocumented body is found on the banks of the Tiber. She is a homeless woman, mother of a little girl of whom she retains every memory and who she probably disowned immediately after giving birth. Who could want her dead?

The clothes found in a school courtyard, accompanied by a writing that does not bode well, belong to a missing boy. Listening to the students we discover that he was a victim of bullying, but no one in class wants to say anything more, until the discovery of his death.

A serial hoarder is killed in his apartment. To solve the case, the contribution of the psychologist who had been following the man's disorder for some time was fundamental. Between her, Monica Porta, and Malik there is an immediate feeling, not just at work. The continuation of the investigations definitively exonerates Muzo by demonstrating that Olga and Paolo were killed by the same person.

A social worker is killed in her garage and the prime suspect is her ex-partner who once beat her and who was at her house on the evening of the murder. He is not the culprit, but a dangerous man who was separated from his wife for this reason. Investigating the case, Muzo begins to deal with guilt over Olga's death.

A sportsman died from poisoning in the bed where he spent the night with one of his clients. Her suspicions focus on her, but the investigations soon lead to someone from her family circle. Marta went to Naples to follow a lead on the murder of her son without, however, saying anything to Carlo. He finds out and puts Cantabella on her tail.

The investigations focus on Nusco and whoever tried to kill him. Malik also has to follow the case of a student found dead in her home. During the investigations the policeman becomes fond of a child, to whom he makes a promise. Carlo is no longer able to live with the conflict of feelings he feels and confesses to Cristina that he has fallen in love with Marta.

A young man of Romanian origins is found dead in a landfill. At first it was thought that the father of the boy's girlfriend committed the crime. Moving forward, however, we discover that his death occurred as part of an illegal boxing match, in which the boy had decided to participate in order to support his arriving son...

A boy asks forensic medicine for information on the cause of death of a friend and a few days later he too is found dead. In the hideout they thought was Imardi's, our men found his body: someone had walled him up alive. Carlo and his family restart the investigation and arrive at Leonardo Sfera, whom Marta, Muzo and Nusco arrested many years earlier for the murder of his girlfriend, Xenia, one of the girls who prostituted herself for Imardi.

Carlo understands from various factors that it was Nusco who killed Xenia years earlier and that is why Sfera wants him dead: he paid for a crime he did not commit. And Muzo and Marta were punished by depriving them of their dearest affections for not believing him.