Despite Lidia's conflicted feelings for Fourneau, the murder of a prison guard forces them to collaborate again, as Jacopo edges closer to finding Nitti.

In the wake of a shooting, Fourneau takes over the Nitti investigation. Enrico receives an eminent guest, while Lidia and Jacopo race against the clock.

The arrival of an old friend with a desperate plea shakes Lidia's relationships and beliefs as she investigates a mysterious death at the circus.