He is our best hope. He is our last hope. He is our only hope. On a lonely moor in northern England, the body of a young woman is discovered. 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. Charlie Parker has also heard it, and from the forests of Maine to the deserts of the Mexican border, from the canals of Amsterdam to the streets of London, he will track those who would cast the world into darkness.

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.

Jerome Burnel was once a hero. He intervened to prevent multiple killings and in doing so destroyed 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 of 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.

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.

Still recovering from his life-threatening wounds, private detective Charlie Parker investigates a case that has its origins in a Nazi concentration camp during the Second World War. Parker has retreated to the small Maine town of Boreas to regain his strength. There he befriends a widow named Ruth Winter and her young daughter, Amanda. But Ruth has her secrets. Old atrocities are about to be unearthed, and old sinners will kill to hide their sins.

In Amsterdam, four bodies, violently butchered, are discovered in a canal house, the remains of friends and confidantes of the assassin known only as Louis. The men responsible for the murders are Serbian war criminals. They believe they can escape retribution by retreating to their homeland. They are wrong. For Louis has come to Europe to hunt them down: five killers to be found and punished before they can vanish into thin air.

In the depths of the Maine woods, the wreckage of a plane 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: a list of names, a record of those who have struck a deal with the devil. Now a battle is about to commence between those who want the list to remain secret and those for whom it represents a crucial weapon in the struggle against the forces of darkness.

Randall Haight has a secret: He is a convicted murderer, a man with the blood of a young girl on his hands. He has built a new life for himself in the small Maine town of Pastor's Bay, but someone has discovered the truth about him. He is being tormented by anonymously sent reminders of his crime. He wants private detective Charlie Parker to make them go away.

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 his latest dark and chilling Charlie Parker thriller, New York Times best-selling author John Connolly takes us to the border between Maine and Canada. It is there, in the vast and porous Great North Woods, that a dangerous smuggling operation is taking place, run by a group of disenchanted former soldiers, newly returned from Iraq. Illicit goods - drugs, cash, weapons, even people - are changing hands.