As the police uncover the truth behind the recent murders of their two co-workers, Marta and Muzo must come to terms with past choices they made.

As Carlo's team grieves and investigates the shocking death of one of their own, suspicion falls on a fellow co-worker.

Carlo and Malik investigate the death of a man who had gotten himself beaten up to cheat on his insurance in order to help his family.

Days after a young man inquires about his friend's cause of death; he too is found dead. Carlo's team learn the motive behind their co-workers' murders.

When the body of a young man is found at a dumpsite, the police discover the victim was involved in illegal boxing matches to support a baby on the way.

While investigating the death of an architecture student, Malik makes a promise to a child that he can't keep, which brings unexpected consequences.

When a hoarder is found murdered in his home, Malik must work with the psychologist who'd been monitoring the victim's disorder to solve the case.

After finding a frozen body during a drug-related chase at an outdoor market, Inspector Carlo Guerrieri fixates on finding a man he saw at the scene.

As the team investigates the murder of a young woman found inside a piece of luggage at the airport, Carlo contends with buried secrets from his past.

Carlo defies Carta's orders while investigating the death of an heir to a pasta empire. Meanwhile, Malik debates whether to hand over the bullets.

When the bloodied clothes of a missing teen boy are found laid out in his school's courtyard, the police are called in to investigate.

The murder of a social worker casts suspicion on her former partner, who used to beat her and was at her home the night of the murder.

A breakthrough in the case leads Carlo and Malik to a community of immigrants living in an old factory. Malik goes on a risky mission alone.

While Malik juggles his secret assignment and a homicide at a jewelry store, Alba realizes she can't hide her true feelings from Riccardo any longer.