An unidentified corpse is recovered from a Lewis peat bog; the only clue to its identity being a DNA sibling match to a local farmer. But this islander, Tormod Macdonald - now an elderly man suffering from dementia - has always claimed to be an only child. When Tormod's family approach Fin Macleod for help, Fin feels duty-bound to solve the mystery.
A brutal killing takes place on the Isle of Lewis, Scotland: a land of harsh beauty and inhabitants of deep-rooted faith. A MURDER. Detective Inspector Fin Macleod is sent from Edinburgh to investigate. For Lewis-born Macleod, the case represents a journey both home and into his past. A SECRET. Something lurks within the close-knit island community. Something sinister. A TRAP. As Fin investigates, old skeletons begin to surface, and soon he, the hunter, becomes the hunted.
Fin Macleod, now head of security on a privately owned Lewis estate, is charged with investigating a spate of illegal game-hunting taking place on the island. This mission reunites him with Whistler Macaskill - a local poacher, Fin's teenage intimate, and possessor of a long-buried secret. But when this reunion takes a violent, sinister turn and Fin puts together the fractured pieces of the past, he realizes that revealing the truth could destroy the future.