Lojacono is not at all convinced that Varricchio killed his own children, especially after talking to him. Pisanello got some bad news about another retiree having taken his own life. Pisanello had been watching over the wrong home.

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.

Armando talks about how the works of Duchamp influenced his work and that of so many contemporary artists. The choice of a unique exhibition hall played a part, as well.

This is the story of an Italian, who haveing been brought up on a dairy farm, travels the world, ending up in Australia, only to return to Italy with some new ideas about the cheese he wants to create.

Camilla can't help herself and goes to the home of Mattioli's former nurse. Gaetano leaves Camilla a text message. Note that in Italy, texting while driving is now prohibited.

Annalena continues talking with Paolo Giordano, who talks about how places such as Afghanistan and Apulia have influenced his writing.

Lojacono follows Varricchio to his hotel to ask a few more questions, in private.

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.

Not only are Armando's photographs reminiscent of the universe and nature — they also recall other works of art from history.

The bread from Altamura (in Apulia) is very famous among Italian bread connoisseurs. Beppe di Gesù, our host in this segment, comes from a long line of bakers. Breadmaking is so special that it's called l'arte bianca (the white art), because of the color of the flour.

Camilla is still convinced there is a mouse in the house and Renzo humors her. At school, there is some tension, but Marchesi has some information for Camilla and her mood changes. Berardi also obtains, almost by accident, some intriguing information, that could be pertinent to the case.

Annalena meets up with Paolo Giordano who talks about the trauma of moving from Turin to Rome. Giordano's first novel, La solitudine dei numeri primi (the solitude of prime numbers) from 2008 was made into a popular film of the same name in 2010.

Marinella is shocked to hear on the news that a father might have killed his own children and she calls her father for some reassurance. The team goes to the funeral of Grazia and Biagio, in order to observe the behaviors of the various suspects and witnesses.

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.

In chapter. 7, Armando describes how, to him, his images represent vegetation, woodlands, trees, and flowers.

The detective's mother is not able to provide any useful information to the police. Renzo finds a small object near the front entrance of their apartment building. He also gets a postcard from New York, causing not a little stress to Camilla.

At the police station the team discusses the case and then they disperse. Lojacono sets up a date with Laura, Palma goes to his new place, Pisanelli goes to spy on his friend the monk, and Ottavia is working late at home.

Imma is troubled, both by seeing Calogiuri again and finding a new dead body. She looks around the apartment and goes to see the seamstress who had found the body.

In this segment, describing chapters 3 - 6, we can imagine storms, volcanoes, oceans, and mountains in Armando's photographs.

The deepest part of the Mediterranean is located between Apulia and Greece. There, conditions are such that there is plenty of food for predators. With the "Researcher for a Day" program, the association gets precious help searching for cetaceans in these waters.

Camilla can't rest until she has reported her suspicions to Berardi, and goes down to the police station before school.

Chiara Gamberale talks about how and where she writes, and how her life has changed now that she has a little girl.

At police headquarters, Guida is settling in to work on his puzzles, but someone with a familiar face walks in.

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.