Mauro wakes up on the beach in front of the villa where Germana had arranged to meet him the night before. He is drunk, he doesn't have his service pistol and he has been hit in the head. At home he discovers Germana in bed with the man from the hotel, both in a pool of blood. Captain Rea's carabinieri arrive: shortly after, Commissioner Corsi and Roberto, Giulia recognizes him as the man who saved Sabina. Mauro follows Germana to the hospital: the woman is seriously injured, the man is dead. While Anna and Luca investigate the case of a girl killed in the night by a hit-and-run driver, Roberto receives confirmation from Boni that Mauro's gun was recently fired. The policeman is tormented by doubt: what if his best friend was really guilty? Meanwhile, social worker Marina Stopponi decides that little Pietro must return to the institution. Mauro tries to oppose but the child is angry with him because he lied to him about Germana.