Still reeling from her husband’s death, Detective Katarzyna Zawieja launches an investigation into a murder of a young woman and her missing newborn.

As Zawieja and Trepa search for links between the victim and former patients at a psychiatric hospital where she worked, Strzelecki receives a suspicious package.

As the police launch a search for Wróbel, one of the victim’s patients, Zawieja visits the prison where he once served time.

While Strzelecki takes charge of the case, a dangerous trip to a remote island brings Zawieja closer than ever to the truth.

After learning a dark truth about her late husband's undercover work, Zawieja makes a series of rash decisions that could jeopardize the case.

As she loses herself in her work, Zawieja discovers another shocking connection between her past, Oliwier's murder and the trafficking ring.

After a fire at the docks, Zawieja attempts to tie the Lanskis to Oliwier’s murder. An unexpected ally helps locate the missing shipping container.

While reeling from a devastating loss, Zawieja vows to locate a trafficking victim’s missing daughter.