Captain Rea and the district team continue their investigations to discover the perpetrators of the Liverani crime. Thanks to the identikit provided by Germana, they manage to trace the identity of the murderer: it is a man who worked for the secret services in Somalia. When Luca and Anna track him down, they just have time to save him from a deadly ambush. In the meantime, Giulia investigates the case of a young man found dying after ingesting a deadly cocktail of narcotics. A friend of the victim reports the dealer who is supposed to have sold the drugs. Mauro and Roberto investigate the death of a beautiful woman of Slavic origins, with a past as a prostitute, who, moreover, was pregnant. It will be discovered that the victim was hiding a double life from her husband. Why was she lying to her husband? Behind the bitter story, the agents will come to reveal a tragic truth.