Armando begins describing the structure of his book, and talks about how he envisions a kind of journey, beginning in the far reaches of the universe, down to the tiny details of a flower.

The founder of the Jonian Dolphin Conservation describes one of its projects: Ketos, Euro-Mediterranean center of the sea and cetaceans, based in Taranto.

Camilla ventures up to Doctor Mattioli's office to see if the nurse is there and to ask him about hallucinations. At the police station, Piccolo is making an effort to make Ferrari like him.

Journalist Annalena Benini introduces us to different writers from different places in Italy, beginning with Rome, where she interviews Chiara Gamberale, a novelist.

Palma and the team have just forty-eight hours to find Varicchio, the father of the two victims. Meanwhile, Palma has to buy furniture, Lojacono meets up with the DA, and Alex comes home late to an angry father.

Imma is having a relaxing moment at home, lost in thought, when the doorbell rings, and she gets curious. Valentina is at a cooking demonstration.

Armando tells us how the designs he is fascinated by come to be. It all has to do with billboards, and how they are marked up, torn, and over time, oxidized. The oxidation process is fascinating.

We get a glimpse of the spaces where a show takes shape, from sewing the costumes, to creating the sets and backdrops. When a model of a set arrives, the job of the team is to translate it into reality, into something big.

Livietta tells Camilla about the scene where Giulio used a word he shouldn't have and was scolded by Renzo. Camilla is still seeing the mouse. The coroner reconstructs the murder for Berardi.

Zia Clo contributes her wisdom about love as this romantic comedy comes to an end.

Alex and Lojacono go to see Biagio's friend and colleague, Renato, and Renato's father, who had been Biagio's professor. Palma talks to his superiors, who want to get involved in the case to speed things along.

Imma tells Maddalena how she thinks things went and Donata opens up. But Imma still has questions about the case.

Little by little, we discover Armando's fascination with oxidation. It seems to have started by looking at advertising billboards.

Caravaggio is in a bad way, and the fishermen agree on how to handle him. The Marquise is desperately trying to reach Porto Ercole to meet him.

Professor Capuana is one of the judges of the lasagna contest. He notices right away that two of the dishes look an awful lot alike. Later on, at the park, the JAMS have an uncomfortable discussion.