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.

Diana has some information for Imma, some of it urgent. Imma calls on Calogiuri even though he is about to take his exam.

There is a new case for the team at Pizzofalcone and Lojacono and Aragona go to the scene of the crime. A young cleaning woman was found dead in the basement of an apartment building.

Valentina goes to see her grandmother, who may have dementia but can still offer good advice. Imma discovers that her husband plays soccer with the prefect, Moliterni's husband.

Lojacono hasn't seen his daughter in a year, and would like to catch up. She has something to tell him, but doesn't say a whole lot more. Meanwhile, another crime has been committed in the city.