While chatting with her mother, Imma discovers who Peppino Pez Pez was. Diana has the prints from the plates found in Stella's cave dwelling.

Torre is cooking in the archives! Berardi shows up and they talk. Later, Berardi meets up with Camilla to fill her in on the case.

We meet a few of the musicians attending the conservatory and the orchestra conductor, who is no-nonsense and stern.

Imma and Calogiuri confront De Nardis with the prints from the photographic plates. He admitted to knowing about them, but that was all. While they are there, Calogiuri receives a phone call that might provide some leads as to the red Panda.

Camilla and Gaetano still have some loose ends to tie up, but they are not thinking of the same loose ends. He finally manages to tell her he is leaving for a new job.

Matteo makes his way to his uncle's apartment. Never mind that his uncle was supposed to come to the station to get him... They agree that there is no point in worrying Matteo's father with the truth.

Imma and Calogiuri enter the cave where the footing is uneven and the two are thrown together. The police have found the boy and De Nardis is called into headquarters for more questioning.

Gaetano is leaving, ready to board his plane, but he clearly wishes Camilla would show up. Meanwhile, it is Potti's birthday and celebrations are going on at home.

Matteo arrives late for class and is told, to sit next to Sara who begins asking him questions. It turns out she is almost blind. After the lesson, Matteo meets some of his classmates.

De Nardis ends up confessing to how things went. He is held responsible for both Stella's and Eustacchio's deaths. Imma is still perplexed, however.

A teacher reads a passage from one of Shakespeare's sonnets and asks the class to interpret it. Matteo speaks up. Here is the original English: "Mark how one string, sweet husband to another,
Strikes each in each by mutual ordering;
Resembling sire and child and happy mother,
Who, all in one, one pleasing note do sing:
Whose speechless song being many, seeming one,
Sings this to thee: 'Thou single wilt prove none."

Imma calls the beautician to the Prosecutor's Office, where she asks her some seemingly bizarre questions. Back home, Eustacchio's funeral is on TV. Imma's mind continues to focus on the events surrounding his death.

Matteo is having a violin lesson when Marioni passes by in the hall and hears him. Matteo's lesson ends early and he is about to learn more about the orchestra conductor everyone thinks of as il bastardo (the bastard).

Imma clears up some more questions with Eufemia Abate about the person Stella was smiling at in the photograph.She has that person summoned for some questioning.

Marioni puts Matteo to the test, asking him to play first violin in the Brahms symphony, together with the entire orchestra. Later, Domenico tells him about someone who had crumbled under Marioni's harsh treatment.