The deepest part of the Mediterranean is located between Apulia and Greece. There, conditions are such that there is plenty of food for predators. With the "Researcher for a Day" program, the association gets precious help searching for cetaceans in these waters.

Pasolini talks about the Italian language and how it has been transformed over the years.

Camilla can't rest until she has reported her suspicions to Berardi, and goes down to the police station before school.

Calogiuri has become a marshal. At Imma's house, the morning is going fairly normally, when a phone call from Diana comes. It can't be good.

At police headquarters, Guida is settling in to work on his puzzles, but someone with a familiar face walks in.

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.

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

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

Pasolini talks about his first book of poetry and what he realized about his country when it was published in 1942. He explains why reviewers wouldn't touch it.

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.

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.

The two night workers take the cash and want to look around to take some measurements. Riccardo is shocked to see all the cash and asks Eleonora about it. Iolde is waiting for Michele, ready to have a glass of wine with him.

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.