The investigation into Lara's death continues, while the police conclude the interrogation of the suspect. Meanwhile Aragona, in order to go out with Irina, promises her that he will find the culprit.

Camilla needs to speak to Anna and phones her, only to find out that Anna had just forced the briefcase open at Quantuque's place. Meanwhile, the investigators interrogate a witness who points to a possible suspect.

The police interrogate Cuocolo after the arrest and he tells of having met Lara on the Mergellina waterfront and of having had a casual relationship with her. However, he denies being the father of the child and claims to have an alibi for the night of the murder, suggesting that the culprit could be someone in love with her who was not reciprocated.

Gaetano and Roberta argue heatedly about the wedding preparations and family responsibilities; the argument angers Roberta, who decides to leave. Meanwhile, Camilla asks Gaetano for help and, thanks to a photograph, a young man is connected to the woman found murdered. For this reason, Gaetano wants to speak with Anna to get more information and deepen the investigation.

Lojacono pursues and arrests Donato Cuocolo. After attempting to flee and threatening the officers with a brick, he is stopped by Alex Di Nardo. At the police station, the investigators put him under pressure: he risks many years in prison, but he can face a lighter charge if he cooperates.

Camilla finds herself involved in the difficult situation of one of her former students, obsessed with Quantunque, who has mysteriously disappeared and whom she wants to help at any cost. Between enigmatic messages and a photograph that has resurfaced from the past, the investigations proceed amid suspicions and uncertainties, without yet a real breakthrough.

While Romano talks with the doctor, he meets Giorgia at the hospital, who is there to assist her hospitalized mother. Meanwhile, at the police station, new clues emerge about a suspect linked to a criminal clan, while Laura and Giuseppe share moments of complicity that lighten the tension of the investigation.

Gaetano notices that Camilla is more serene and she confides in him that Renzo, too, finally seems to have calmed down. However, the peace is shattered when Ventruti reaches the commissioner to get confirmation about the identity of the woman found dead. Devastated, the man lets all his pain emerge and reveals details that could prove crucial for the investigation.

A mysterious phone call casts Lojacono into shadow: a stranger from Agrigento hints at an unpaid mortgage and lets slip a veiled threat.
Meanwhile, Romano focuses all his anguish on little Giorgia. Between fear and hope, the doctors try to reassure him about the child's condition.

Anna and Camilla enter Quantunque's apartment to understand why he hasn't been to the restaurant anymore; the only suspicious element is a suitcase locked with a combination. Meanwhile, at home, Renzo appears more serene after talking with his mother-in-law and attempts a reconciliation by preparing dinner.

Rosaria appears very impressed by Alex's new house and, between one compliment and another, updates her partner on the latest developments in the investigation. Meanwhile Lojacono goes to the restaurant to see Letizia, who welcomes him by offering a rich and inviting selection of typical Neapolitan dishes.

Anna is worried about Quantunque and asks Camilla to accompany her to his house to understand how he is, since he didn't come to the restaurant. Meanwhile, Torre and Piccolo enter Torrielli's apartment, finding it completely turned upside down: no clear clues emerge, except for elements that suggest an ambiguous professionalism.

Between interrogations, conflicting leads and multiplying suspicions, secrets emerge linked to the victim and their private life. Meanwhile Romano faces the weight of his own guilt and the violence he committed but is called back to a sense of responsibility by the group.

Commissioner Berardi investigates the disappearance of Mrs. Torrielli and, during an inspection, interrogates the widower Ventruti. In an informal setting, over coffee, an important detail emerges: Flora's new address.

Mrs. Nubila retraces what she knows about Lara, the young woman welcomed with almost filial affection into her family. However, the fragile balance of her life is shattered by her husband's sudden return. Di Nardo and Lojacono reveal to her an aspect of Lara's story that the woman was unaware of.