Police Sergeant William South has a good reason to shy away from murder investigations: he is a murderer himself. A methodical, diligent, and exceptionally bright detective, South is an avid birdwatcher and trusted figure in his small town on the rugged Kentish coast. He also lives with the deeply buried secret that, as a child in Northern Ireland, he may have killed a man. When a fellow birdwatcher is found murdered in his remote home,...