Once in Rome, Caravaggio looks for work in the studios of 2 Italian painters who were well-known at the time. Nobody seems very interested in his work.

We discover that Margherita Hack was a devoted fan of the long-running TV series, Un posto al sole [a place in the sun]. She explains why. Francesca goes back to Trieste and meets up with Eda who talks about having lived in the same house with Margherita Hack.

In the piazza, Giuseppe discusses the war with some colleagues. He then runs into an old acquaintance. Later, in the lab, he talks about science and faith with his professor friend.

It's dinner time in the Martini household. Ciccio is finishing his homework, Alberto is going to play soccer with some friends, Maria apologizes to her father, and Giulio shows up to make trouble, as usual.

At Dora's funeral, Psalm 23 is recited. Camilla is there, but not everyone appreciates her presence. Later, Sonia goes over to Gaetano's with some treats, but senses something is wrong.

Imma and Pietro are at a concert of a female saxophone quartet. Calogiuri is studying, but something about the Bruno case comes up.

Romano and Aragona go to talk to Castrovetere, who is in prison, to find out what he might have had to do with the murders. Pisaniello is on the huge escalator down to the metropolitana when he sees people running. He rushes to find out what's going on.

Finally, Ugo gets Nora alone and they are able to talk. Until the talking breaks down, that is. Once again Roberto, their lawyer, finds himself in the middle of things.

Michele goes back home after his mother dies and there, he spends some time with his childhood friend, Costanza Colonna. He tells her about his plans to go to Rome, the artistic center of the universe.

Margherita Hack spent some time in politics and was also an entrepreneur at times. But she had a lot of fun, too. On the panel with Camilleri, the author of the Montalbano stories, they all come out (in unison) with the famous introduction Montalbano sono (Montalbano, I am). Putting the verb at the end is typical of Sicily, where the story takes place. Otherwise, it would be Sono Montalbano (I'm Montalbano) or, on the phone, "This is Montalbano."

As he had promised Cloe, Giuseppe continues to look for her little boy, with little success. Some children he treats aren't really ill, they're just not getting enough to eat. Italy enters the war. Some doctors go to the front, others stay behind.

Ciccio and Libero are watching TV when Alberto comes to ask about his tee shirt, and the doorbell rings. It's someone about the dog. Lele goes to Irene's place to talk to her.

Renzo and Camilla discuss this new development. He is very suspicious and worried. Camilla, as usual, wants to handle things on her own. She goes down to police headquarters the next day.

From the phone records, Imma discovers phone calls received by Bruno but the number doesn't seem to exist. Calogiuri indeed gets a phone call from Paolo in Bari.

The team goes to search Capuano's home and then they go to the club to get more information about him. That leads them to a boxing club.