A young man is departing by train and says goodbye to his two parents in different ways. In another scene, a little girl is going to school very reluctantly and her brother has to practically drag her there.

The case has been solved and it's the last day of school for Camilla and her students. Who will flunk and who will be promoted?

As sometimes happens, something Pietro says, even in an intimate moment, reminds Imma of some detail in the case. Off she goes with Calogiuri to try for some new leads.

Mattioli's widow recounts the story, told through her eyes, of the murder, including what she heard in the stairwell of the building.

Imma manages to interview Stacchio's father, who is not exactly forthcoming. Back home, Imma gets complaints about her cooking and they listen to the news report about the missing boy.

Both Camilla and Gaetano, for different reasons, arrived at a similar conclusion about the earring. Piccolo and Ferrari have a job to do, but they also do some personal talking.

Leaving school, Valentina and her friend meet up with a certain Samuel who has a little present for Valentina. Imma and Calogiuri see Stacchio's friends and ask them some questions, with the pretext that Calogiuri had lost his dog.

Camilla and Renzo go down to the morgue to identify the dead body. They take with them the earring Renzo found in the stairwell near Mattioli's office. Back home in bed, they discuss some peculiarities regarding the earrings and the corpse.

Imma gets some information from her "helpful" colleague and goes to Eustacchio's school to find out more. Viewers might recognize his teacher.

It's time for an official introduction to Camilla's mother's fiance. Everyone is a bit tense. Camilla then gets a phone call that changes the course of the evening.

Calogiuri shows up at Imma's office with a possible piece of evidence, meriting a trip to see Stacchio again. They head out together but there is some troubling news awaiting them there.

Mattioli's wife talks to Berardi and tells him what she knows so that they can find the body of the nurse. At school, Camilla's class discusses the book "L'Esclusa" by Pirandello. The usual translation of the title is "The Outcast," but literally, it is "the excluded woman."

Imma attends Stella's burial at the cemetery and is struck by the writing on a wreath. She introduces herself to the woman who placed it on the gravesite and tries to find out a little more about Stella's life. She is also drawn to the ossuary or wall burial site bearing the name, Centino Latronico. We recall him as the man Imma suspects might have been her real father.

The case has been solved, one gets the feeling that if the murderer had been Varricchio, a common ex-convict, instead of a promising biologist, son of a prominent professor, the outcome would have been more palatable to the city and to the press.

The police question the man they caught fleeing the martial arts center and are able to tie up a lot of loose ends. Gaetano and Sonia discuss the case over dinner, but the inspector's mind is elsewhere. Renzo is finally convinced that Camilla wasn't having hallucinations when she saw the nurse's body upstairs.