Convinced that Luisa Baccarini was murdered, our men investigate the few traces of DNA found at the crime scene. The lead turns out to be good. Thus begins the hunt for Oscar Romero. But Viola also wants to get in touch with Remo, who she has discovered is alive. Meanwhile, X is busy solving the case of an elderly retired teacher found murdered in a park. Investigating the murder of a famous TV presenter, our heroes come into contact for the first time with a world of appearances and unbridled ambitions, which push even ordinary people to exploit their feelings to indulge their desire for money and success. Meanwhile, Remo's gang continues to evade capture... and Giulia and Luca come into conflict over this.