The circle is tightening and the police are investigating two possible profiles: a lawyer and an engineer. Between jokes and internal dynamics at the police station, two officers are assigned to interrogate engineer Senatore and two others go to Nubila.

While the little girl hovers between life and death in the hospital, the forensic police and investigators begin to dig into the past of the young woman found dead. A regular residence permit, jobs as a domestic worker in upscale neighborhoods, rent paid in cash and too many unanswered questions.

The investigations are only at the beginning and the autopsy results are not yet available. For now it emerges that there are no signs of struggle and that the girl was caught by surprise. Meanwhile, at home, Giuseppe and Laura rediscover their complicity.

The death of the young Ukrainian woman, who had just become a mother, raises many questions: the identity of a rescued child, a possible blood relationship and the evident signs of a murder. Between DNA tests and professional tensions, they attempt to reconstruct the story.

After gathering some confused information from a neighbor about the woman who might have abandoned the newborn, the police decide to enter the apartment. Inside, the body of a woman is found. Procedures are immediately triggered and officer Di Nardo reports the discovery, launching the investigation.

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.