While at the police station Claudio Sabatini is looking for a way to free Bradic, who is being held awaiting questioning, without arousing the suspicions of his colleagues, Ardenzi and Sandro are dealing with the case of a Pakistani girl stoned to death in the street and Isabella is dealing with her first serious friction with her boyfriend Giulio who ends up slapping her with serious consequences. / Bradic's death at the police station and at the hands of Marcello, forces the commissioner to put the young policeman under investigation and for this reason Oliviero, feeling misunderstood and unjustly accused, runs away and disappears. Ardenzi is worried about the boy, he wants to find him and it is his job to clarify the dynamics of the facts; Claudio Sabatini also needs to find Marcello.

The death of Marcello has shocked the entire team but the worst blow was suffered by Roberto who feels responsible for the boy's disappearance and is now determined to understand what happened. In the meantime, Sandro and Giacomo discover a prostitution ring run by chinese where underage girls are enslaved; while Isabella and Valeria manage to save Giulia, a woman mistreated by her husband, who for the love of her daughter finds the courage to report him... but for Isa, a champion of mistreated women, the real troubles begin now: on her PC, in fact, an order to stop from an anonymous but very threatening sender arrives. / Ardenzi, following the notice of investigation, appears before the judge with his lawyer and discovers that he is being investigated for incitement to suicide.