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. 

It is deep winter. The darkness is unending. The private detective named Jaycob Eklund has vanished, and Charlie Parker is dispatched 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.

It is spring, and the mummified body of a young Jewish woman is discovered buried in the Maine woods. It is clear that she gave birth shortly before her death. But there is no sign of a baby. Private detective Charlie Parker is engaged by the lawyer Moxie Castin to shadow the police investigation and find the infant, but Parker is not the only searcher. Someone else is following the trail left by the woman, someone with an interest in more than a missing child, someone prepared to leave bodies in his wake.

The community of Prosperous, Maine has always thrived when others have suffered. Its inhabitants are wealthy, its children’s future secure. It shuns outsiders. It guards its own. And at the heart of Prosperous lie the ruins of an ancient church, transported stone by stone from England centuries earlier by the founders of the town. But the death of a homeless man and the disappearance of his daughter draw the haunted, lethal private investigator Charlie Parker to Prosperous.

In the depths of the Maine woods, the wreckage of an aeroplane is discovered. There are no bodies, and no such plane has ever been reported missing, but men both good and evil have been seeking it for a long, long time. What the wreckage conceals is more important than money: it is power. Hidden in the plane is a list of names, a record of those who have struck a deal with the Devil.

The border between Maine and Canada is porous. Anything can be smuggled across it: drugs, cash, weapons, people. Now a group of disenchanted former soldiers has begun its own smuggling operation, and what is being moved is infinitely stranger and more terrifying than anyone can imagine. Anyone, that is, except private detective Charlie Parker, who has his own intimate knowledge of the darkness in men's hearts.

It is 1997, and someone is slaughtering young women in Burdon County, Arkansas. But no one in the Dirty South wants to admit it. In an Arkansas jail cell sits a former NYPD detective, stricken by grief. He is mourning the death of his wife and child, and searching in vain for their killer. Obsessed with avenging his lost family, his life is about to take a shocking turn. Witness the dawning of a conscience. Witness the birth of a hunter. Witness the becoming of Charlie Parker.

Stripped of his license, Charlie Parker takes a job in a Portland bar. Alone and directionless, he faces at last a shadow he has lived with since his childhood: what made his father, a respected police officer, apparently shoot dead two unarmed teens and then commit suicide. His quest leads him back to the little New York town where he grew up, to the mysterious history of the NYPD, and to the existence of secret friends and hidden enemies.

In The Unquiet, private detective Charlie Parker returns to untangle a horrifying story of betrayal, unclean desires, and murder -- a story of never-ending evil whose conclusion is still unknown.

As a small boy, Louis witnesses an unspeakable crime that takes the life of a member of his small, southern community. He grows up, moves on, but is forever changed by the cruel and brutal nature of the act. It lights a fire deep within him that burns white and cold. Now, years later, the sins of his life are reaching into his present, bringing with them the buried secrets and half-forgotten acts of his past.