When a ballerina turns up dead, her alleged stalker is accused of murder. Desperate, the suspect's mother turns to Italy's first female lawyer for help.
Much to Enrico's chagrin, Lidia agrees to defend an anarchist accused of murder. But the scandal goes deeper than she expected and lands her in trouble.
A woman very similar to Lidia — educated, underestimated, scorned — is on trial. Lidia wants to represent her, but is she too invested to see the truth?
As Lidia investigates a mysterious poisoning at a prestigious boarding school, Jacopo digs deeper into their friend's death and Marianna uncovers a lie.
Enrico remains doubtful about running for Parliament while Prosecutor Fourneau and Lidia struggle to connect the victims of a series of brutal murders.
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.