After the death of the mafia boss Paternò, the Sant'Andrea department faces new challenges: Inspector Claudio Martusciello captures a drug addict who robbed an elderly woman, but does not appear in court to testify. They discover that someone has taken his identity. In the meantime, a headless man is found and a Somali girl mysteriously disappears. The mother confesses to having hidden her to save her from infibulation, but the child has disappeared. Francesco Silla, seeing his father with another woman, decides to leave his grandfather's house in Piazzetta Viviani.