As the pieces of the Chestnut Man mystery fall into place and the perpetrator's motives become clear, Thulin and Hess fight to save innocent lives.

Neither Thulin nor Hess can stop thinking about the unanswered questions hanging over their case. Rosa's career unravels as a childhood memory surfaces.

The detectives find inconsistencies as they dig deeper into the Kristine Hartung investigation, while the threats against Rosa take a terrifying turn.

As pieces of the chilling puzzle fall into place, the police race to uncover a hidden identity. But with time running out, will the killer strike again?

Unsettling stalking evidence found on a missing woman's phone leads the Copenhagen police to re-examine an unsolved murder from two years earlier.

Thulin and her reluctant new partner, Hess, investigate a gruesome murder. Politician Rosa Hartung returns to work after her daughter's disappearance.

Reeling from a recent tragedy, Mark and the investigating team chase a dangerous suspect to a countryside inn — only to make a shocking discovery.

Developments in the case revive hope for grieving yet determined Marie. Meanwhile, a new father receives a disturbing email from a stranger.