A serial killer is on the prowl. The victims are young women. The investigation is taken over by another inspector who finds mistakes in the files.

A man is shot at a hotel. Intelligence officers appear at the crime scene, complicating Kaszowski's investigation. A power play ensues.

A patient is murdered at a psychiatric hospital. Everything indicates that the murderer is another resident of the institution with a dark past.

A priest tells Kaszowski that he knows of awful things but is bound by the seal of confession. Soon after, the priest meets a terrible fate.

Joanna investigates the death of a nursing home resident, with surprising results. For the first time, she has grounds to reveal Kaszowski's error.

The head of the BSW asks Joanna to investigate the kidnapping and murder of a 16-year-old girl. The desperate father wants to punish the perpetrators.