Peter Mörlin

Angelica, a park ranger, seeks the help of her former boyfriend, Viktor, a dog handler, to search for a missing woman in a dangerous nature reserve in Sweden. The search is complicated by a disturbing myth about the Cave Banshee, a vengeful spirit from the Nordic folklore that once lured miners to their deaths in the reserve's treacherous caves.

In the 9th century, a young Swedish woman finds a man bleeding in the forest who she soon learns was sent to protect her family from impending evil.