In a community borne by myth and indomitable nature, the search for a serial killer around Loch Ness becomes a matter of life and death for local detective Annie Redford. Annie is still struggling to process her first murder case. When Niall Swift's body is found at the foot of Carn Mohr Mountain, and a human heart at Loch Ness, a nightmare begins for a small village. The beautiful setting in the Highlands becomes the site of a number of heinous acts.