Imma and Pietro return from a weekend in Paris where they tried to distract Valentina, still shaken by the separation from Samuel. But as soon as Imma sets foot in the house, she is immediately summoned on a case of murder that took place during the transhumance and which has the chief prosecutor Vitali as a witness. In addition to the investigation, Imma will have to clarify the delicate relationship with Marshal Calogiuri and, as if that were not enough, Pietro also seems to want to change his life.

Imma investigates a strange theft in the home of a friend of her mother-in-law, whose stolen goods reappear intact a few days later while a man, Ulysses Delillo, is found dead in his artisan workshop. The two cases are linked and the yellow solution comes thanks to the proverbial memory of Tataranni. In the meantime, an act of courage, which proves decisive in the trial of Romaniello, forces Samuel to leave Matera, which Valentina blames her mother for.