Andri Ólafsson has started a new life in Iceland's capital of Reykjavik. As he tries to rebuild a shattered family at home, an attempt to assassinate a politician through self-immolation throws his work back into the deadly cat and mouse games he had been trying to escape. Quickly learning that the attacker was the politician's twin brother, his investigation leads him back to the same small town he had run from, and to his old partner. As he and Hinrika, now the town's Sheriff, start putting the pieces together, they realise that the seeds of crime may have struck root higher up than they ever thought possible and as such the risk to both them, and their loved ones, has never been greater. The much-anticipated return of Iceland's highest-rated series ever is an exploration of psychological rather than physical entrapment, as Andri comes to realise that after confronting human nature's icy depths in the first season, he has in fact barely scratched the surface.