As Naples prepares for Christmas, Ricciardi investigates the murder of a Fascist port officer and his wife, while cautiously courting Enrica.

After a pharmacist is murdered, Ricciardi links a series of ritual killings. His love for Enrica forces him to face his dark curse.

When a Jesuit priest is found murdered, Ricciardi uncovers links to influential families. It is a race to solve the case before his wedding.

As Ricciardi awaits a new life, he investigates a murder that implicates Livia, forcing him to question loyalty and truth.