Testori has understood that Lombardo is monitoring him and uses another number. One evening the PM lurks under the director's house and he confronts her with a hard face. Massini discovers that Piras takes money from a prisoner. Testori continues to study Muslims, even more so after the death of a jihad leader, and discovers that Muslims communicate with the outside world through books; meanwhile the broker Ibrahim is killed by a hit-and-run driver.

Testori decides to isolate the Muslims and his ex-wife lets him know that the secret services are opening a dossier on him. Massini starts talking to Lombardo. Testori realizes that Iaccarino understood that Lackovic wanted to get the successor of the jihad leader Abu Asifah to escape from the San Michele. The director then understands that Massini is investigating on behalf of Lombardo and confronts her by confessing that she had killed Lackovic to avenge Iaccarino's death.