Renzo is at home with Livietta and they are doing research on pets. Camilla goes to help Gaetano with the recognition of the centurion, but she will also need Gaetano's help later.

Camilla and Gaetano talk in the car about commitment in relationships and marriages. When they arrive at Camilla's house, they carry the water heater together when Renzo sees them but doesn't help.

Renzo tries to convince Camilla that he's not jealous, but she maintains that he's just stressed about the competition. At school, the girls who had received the photos before they were deleted show some details of the centurions to the teacher.

Camilla gives Gigi a ride and asks him what his brother has to do with Holly's murder. Gaetano meets Meg and shows her the photo of the boy who had lunch with her sister on the day of the accident.

Torre and Gaetano leave Hotel Bisanzio to go towards the Teatro Marcello near the restaurant where the American woman was seen with the man from the sketch. Meanwhile, Camilla tries to talk to Renato with Gigi's help.

Berardi and Torre manage to find out where Renato lives, and when they go to his house, they find Camilla. At that point, Renato tells his version of the events.

While the police are in the house with Gigi and Renato, the grandmother returns and gets scared. Although Renato declares himself innocent, he tries to escape but Gaetano manages to stop him. At Camilla's house, Livietta has a proposal for her father.

The news of the American tourist's murder is broadcast on television when Camilla returns home and finds Renzo very nervous about his project, which, according to him, is missing something.

Gaetano finds himself evaluating his future in-laws' proposal and must also give his professor friend's contact to his fiancée. Renzo is updating everyone on the project and the lighting-related modifications.

There's a bit of chaos in class between Aiello and some classmates, Camilla is forced to calm things down. The victim had purchased some diamonds that have disappeared.

Gaetano meets Camilla at school before Gaetano arrives to ask her for a favor. Both seem to want to hide something from their respective partners. Gaetano and Torre talk to the jeweler again.

Livietta tells Camilla that her grandmother promised to give her a tropical fish. Renzo still doesn't know anything about it, and when Camilla proposes it to him, he is adamant. Meanwhile, during the search at Aiello's, something is found.

Renato is questioned after one of the diamonds was found in his room. Camilla wants to believe he is innocent until proven otherwise while the principal already thinks he is guilty. Meanwhile, Roberta will meet Camilla for dinner.

Livietta is still trying to figure out how to convince her father to get a fish. Camilla, before going to dinner with Roberta, stops by to say hello to Renzo who is busy with his important project.

Camilla is finishing dinner with Roberta and Renzo is about to leave to pick her up when he is stopped by Andreina who wants to try to convince him to reward Livietta. At Hotel Bisanzio, Camilla and Roberta encounter a somewhat embarrassing situation.