"It is deep winter and the darkness is unending. A private detective named Jaycob Eklund has vanished and Charlie Parker is assigned to track him down. Parker's employer, Edgar Ross, an agent of the Federal Bureau of Investigation, has his own reasons for wanting Eklund found. Eklund is no ordinary investigator--he is obsessively tracking a series of homicides and disappearances, each linked to reports of hauntings. Now Parker is drawn into Eklund's...

He is our best hope. He is our last hope. On a lonely moor in the northeast of England, the body of a young woman is discovered near the site of a vanished church. In the south, a girl lies buried beneath a Saxon mound. To the southeast, the ruins of a priory hide a human skull. Each is a sacrifice, a summons. And something in the darkness has heard the call. But another is coming: Parker the hunter, the avenger. From the forests of Maine to the deserts...