Ewert returns to Stockholm with shocking new information to share with his team. But can he be bring himself to force everything to the surface?

Ewert travels to Romania with Alina to unearth the truth about the sex trafficking ring. Elsewhere, Lucian is trying to cover up tracks.

The investigation into the recent tragedies leads the police to box 21. Will the storage box's contents provide answers to their questions?

Hostage negotiator Tobias Nordwall is called in to tackle the sensational events at the hospital, but the situation quickly gets out of control

Lidia is attacked and young police officer Mariana Hermansson is on the case, while Ewert receives devastating news about Anni's condition.

Young Romanian waitress Lidia is lured to Sweden and trafficked into prostitution. Meanwhile, police officers Ewert and Anni are expecting their first child.