5x11 - Distretto di Polizia

After the failed attack on Terenzi by the two mysterious motorcyclists, all that remains are the bullets from the shooting. Parmesan and Rea work together to discover that Terenzi's gun had already been fired two years earlier to kill a city councilor. Meanwhile, Mauro and Roberto are dealing with the case of a twenty-year-old drug addict found dead in the Colle Oppio park. Her policeman brother, Stefano, is convinced that the killer is the drug dealer Sanna and demands to participate in the investigation. It will be the father, unable to sustain the charade organized by Stefano to frame Sanna, who confesses what really happened that evening: he and his daughter had argued because Patrizia needed money and during the fight the girl had hit her head, dying instantly.