Ari Thór Arason is a local policeman whose tumultuous past and uneasy relationships with the villagers in an idyllically quiet fishing village in Northern Iceland - where no one locks their doors - continue to haunt him.

The peace of this close-knit community is shattered by the murder of a policeman - shot at point-blank range in the dead of night in a deserted house. With a killer on the loose and the dark Arctic winter closing in, it falls to Ari Thór to piece together a puzzle that involves tangled local politics, a compromised new mayor, and a psychiatric ward in Reykjavík where someone is being held against their will.

Then a mysterious young woman moves to the area, on the run from something she dares not reveal, and it becomes all too clear that tragic events from the past are weaving a sinister spell that may threaten them all.