As a blizzard swells just days before Christmas, the car belonging to the wife of a retired local judge is discovered abandoned on a rural road in Tamarack County. After days of fruitless effort, the search-and-rescue team has little hope that she'll be found alive, if at all. Cork O'Connor, former sheriff and now private investigator, is part of that team. Early on, Cork notices small things about the woman's disappearance that disturb him. But when the beloved pet dog of a friend is brutally killed and beheaded, he begins to see a startling pattern in these and other recent dark occurrences in the area. After his own son comes close to peril, Cork understands that someone is spinning a deadly web in Tamarack County. At the center is a murder more than twenty years old, for which an innocent man may have been convicted. Cork remembers the case only too well. He was the deputy in charge of the investigation that sent the man to prison. With the darkest days of the year at hand, the storms of winter continue to isolate Tamarack County. Somewhere behind the blind of all that darkness and drifting snow, a vengeful force is at work. And Cork has only hours to stop it before his family and his friends pay the ultimate price for the sins of others.