Following a shocking attack on a politician in Reykjavik, Chief of Police Andri makes a return to his rural hometown, a place where the dark events of the past still haunt him.
With Skuli now eliminated from its lines of enquiry, and Mayor Hafdis in the clutches of the Hammer of Thor group, has the team lost precious time in its efforts to save Hafdis?
The police have foiled a terrorist plot but they’re left no closer to having solved the mystery of who killed Finnur, or why Gisli took the actions he did.
Ketill finds dead animals up by the lake and has his suspicions about why Skuli became so ill hiding out in the mountains. Meanwhile, Ebo is beginning to feel in danger.
The polluted lake has been discovered and the town's water supply has been turned off to prevent further cases of sickness. Andri and Hinrika are chasing up leads all over town.