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.

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.

Jerome Burnel was once a hero. He intervened to prevent multiple killings and in doing so damned himself. His life was torn apart. He was imprisoned, brutalized. But in his final days, with the hunters circling, he tells his story to private detective Charlie Parker. He speaks of the girl who was marked for death but was saved; of the ones who tormented him and an entity that hides in a ruined stockade. Parker is not like other men. He died and was reborn. He is ready to wage war.

The Black Angel is not an object. The Black Angel is not a myth. The Black Angel lives. A young woman goes missing from the streets of New York. Those who have taken her believe that nobody cares about her, and that no one will come looking for her. They are wrong. She is 'blood' to the killer Louis, the man who stands at the right hand of private detective Charlie Parker, and Louis will tear apart anyone who stands in the way of his attempts to find her.

Still raw from the brutal slayings of his wife and daughter, and the events surrounding the capture of their killer, Charlie Parker, retreats to the wintry Maine landscape of his childhood. By following in the steps of his beloved grandfather, Parker hopes to heal his spirit and get through the anniversary of Jennifer and Susan's murder. But the echoes of the past that await him are not all benign. In a gruesome re-enactment of Parker's own nightmares, another young woman is killed with her child and his brief involvement in their lives impels Parker to hunt their vicious murderer....

Randall Haight has a secret: when he was a teenager, he and his friend killed a 14-year-old girl. Randall did his time and built a new life in the small Maine town of Pastor's Bay, but somebody has discovered the truth about Randall. He is being tormented by anonymous messages, haunting reminders of his past crime, and he wants private detective Charlie Parker to make it stop. But another 14-year-old girl has gone missing, this time from Pastor's Bay, and the missing girl's family has its own secrets to protect.

They are the Reapers, the elite among killers. Men so terrifying that their names are mentioned only in whispers. The assassin Louis is one of them. But now Louis, and his partner, Angel, are themselves targets. And there is no shortage of suspects. A wealthy recluse sends them north to a town that no longer exists on a map. A town ruled by a man with very personal reasons for wanting Louis's blood spilt.

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.

Daniel Clay, a once-respected psychiatrist, has been missing for years following revelations about harm done to the children in his care. Believing him dead, his daughter Rebecca has tried to come to terms with her father's legacy, but her fragile peace is about to be shattered. Someone is asking questions about Daniel Clay, someone who does not believe that he is dead: the revenger Merrick, a father and a killer obsessed with discovering the truth about his own daughter's disappearance.

When Charlie Parker was still a boy, his father, a NYPD cop, killed a young couple, a boy and a girl barely older than his son, and then took his own life. There was no explanation for his actions. Now Parker is working on his most personal case yet: an investigation into his own origins and the circumstances surrounding the death of his father. The investigation will reveal a life haunted by lies, by secrets kept and loyalties compromised.

In South Carolina, a young black man faces the death penalty for the rape and murder of Marianne Larousse, daughter of one of the wealthiest men in the state. It's a case that nobody wants to touch, a case with its roots in old evil, and old evil is private detective Charlie Parker's speciality. But Parker is about to make a descent into the abyss, a confrontation with dark forces that threaten all that Parker holds dear: his lover, his unborn child, even his soul.

Tormented and racked with guilt over the brutal slaying of his wife and daughter, Charlie Parker, ex-cop with the NYPD, agrees to track down a missing girl. It is a search that will lead him into an abyss of evil. At the same time, he is warned by an old black woman in Louisiana that "The Travelling Man" is about to strike again. Multiple strands converge with a horrific confrontation in which hunter and hunted are intimately connected by guilt.

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.

Three hundred years ago, the settlers on the small Maine island of Sanctuary were betrayed by one of their own, and slaughtered. Now a band of killers has returned to Sanctuary to seek revenge on a young woman and her son, and the only people who stand in their way are a young rookie officer and the island's resident policeman, the troubled giant known as Melancholy Joe Dupree. But Joe Dupree is no ordinary policeman. He is the guardian of the island's secrets, the repository of its memories.