Elena and Pietro find Alessandro in his boat, in shock and blood-spattered. Since Samuele has been found dead in his house, Elena fear is confirmed: Alessandro accuse himself for his brother death. Elena is the only one to understands his motivations: he found the truth. And she at last tells her father this truth. Caterina is Samuele’s daughter. During investigation, Elena find out that in Samuele’s house there was another person and she convince herself that Alessandro is innocent. In the meanwhile Pietro examine thoroughly the situation and discover that Grazia lied to fifteen years old Elena about paternity: Caterina is not born after the violence, but she’s Alessandro’s daughter. Before telling this truth to Elena, Pietro must help Elena to solve the case. Together they find out who was in Samuele house: Ines. She killed Samuele because he blackmailed her. He would have forced her to close out her house for his real estate speculation, because he found out that she made the tuna factory explode. Ines discovered that her daughter Martina’s death wasn’t an accident but a terrible classmates joke ended up in tragedy. She arrived by chance at the tuna factory, and opened the gas tanks in a fit of madness, causing the building explosion and kids death. She’s about to put an end to her life, but Pietro save her. Once the case is solved, Alessandro is exonerated and the peace is back, Pietro can at last tell the truth about Caterina and Elena: the family will finally reunite