The Valhalla Murders plot
Arnar, an Oslo detective with a painful past, reluctantly travels from Copenhagen to Reykjavik to help investigate a case of Iceland's first serial killer. It concerns a brutal series of murders in which older men are brutally abused and slaughtered. Arriving in Iceland, Arnar is paired up with Senior Inspector Kata, who is not happy with his involvement. The murders don't seem to have much in common at first, but then the duo discover that the murders are related to an abandoned orphanage for boys, Valhalla. And in Valhalla 35 years ago terrible crimes took place...