Imma and Calogiuri manage to interview Bizzari who admits a few things about Stella. Diana confesses that even though her husband has come home, it's not any better than before, when he was gone.

Imma and Matarazzo go to the butcher shop in Grottole and find out some information from both the butcher and a woman seated there. Calogiuri has a little information from the coroner for Imma.

Lombardi shows up for an informal meeting to talk about a building project. Meanwhile, Imma is driven to Grottole by Matarazzo who is going a bit too fast.

For once, Valentina comes home in a good mood. Imma tells Pietro about her ex-classmate's murder. Don Mariano has a conversation with Samuele, a kid who seems to be in contact with Valentina, but who evidently has had some problems with the law.

Imma goes to join Calogiuri in the area of Matera where homes and churches were built into the rock. There are i sassi (cave houses carved out of the rocks) and the lamioni, barrel-vaulted rooms leading to the cave houses. She is guided by Eustacchio, a kid she thinks should be in school. But he knows quite a bit about the history of the place.

Valentina has begun studying again, and talks to Bea after class. There is a cloud over Imma's office, as she and Calogiuri talk about the case.

Calogiuri has become a marshal. At Imma's house, the morning is going fairly normally, when a phone call from Diana comes. It can't be good.

De Ponte is still intent on finding Caravaggio to arrest him. Fortunately, the artist has people who want to protect him and is taken by boat to Siracusa, where a friend takes him in.

De Nardo is waiting for her friend at the pizzeria. Lojacono calls Laura about their relationship.

Imma goes home after a long day to find Pietro and Valentina in the kitchen. She relaxes on the sofa only to catch sight of a picture of her as a girl...

Domenico Bruno tells Imma the whole story of how his brother died.

Imma's excellent memory helps her figure out some details of the murder, as she talks to the brother from Argentina.

Lojacono and Aragona go to see the husband of the ex-door person. He confirms the fight between Giacomo Scognamiglio and Teresa's husband. Back at headquarters, Romano objects to always having to stay there instead of going out as Lojacono and Aragona do.

Pietro seems to have a great time at the dinner party, while Imma is focused on work and on finding the right moment to talk to her hostess.

Imma and Pietro go to dinner at the prefect's and play with some Latin proverbs. One of these gives Imma an idea about the case.