Pietro witnesses a fatal explosion during a party at an old tuna factory.

Elena and Alessandro investigate an email sent to Caterina shortly before the explosion.

Caterina threatens to kill herself and Elena tries to reason with her.

The disappearance of the samples complicates the investigation.

Diana awakens from her coma but doesn’t seem to remember the last two years.

Elena does her best to help Caterina. Pietro tries to get Diana to open up.

Diana is found dead at the base of a cliff. But who pushed her, and why?

Does Caterina trust Elena enough to finally tell her the truth?

When Enrico is arrested, Grazia and Caterina face the consequences.

A fire breaks out at the headmistress’s house. What will it take to solve the mystery?

Pietro and Elena find Alessandro beaten up on his boat. But what really happened?

Fabrizio, Matteo and Caterina find the missing piece of the puzzle.