Former garda Jack Taylor investigates the disappearance of a woman's teenage daughter, a task that leads him into the underworld of Galway City. When four bodies turn up in the river and Jack's favourite barman dies in mysterious circumstances, everything he believes in begins to unravel - making him question those closest to him.
Jack is returning to his beloved Galway clean and sober after having been away for a year. It is not long before Jack is dragged back under when he uncovers a group of vigilantes calling themselves The Pikemen, after old Irish Freedom Fighters. Jack is pushed to the brink like never before. He soon realizes that the only way to see justice done is to do the very thing he has been trying to avoid: to become like the Pikemen.
Jack is hired by the daughter of a former inmate of the infamous Magdalen Laundries, a home for wayward girls, to find the identity of a former nun, known only as Lucifer. The seemingly simple case grows complicated when two young boys are murdered. Jack sets out on the old nun´s trail, uncovering religious hypocrisy and abuse.
The impossible has happened: Jack is living clean and dating a mature woman – rumour suggests he is even attending mass! The accidental deaths of two students appear random, tragic events, except that in each case a copy of a book by John Millington Synge is found beneath the body. Jack begins to believe that a calculating killer is out there, enticing him to play.
The decapitation of Father Joyce in a Galway church horrifies even the most jaded citizen. Jack, devastated by a recent trauma of personal loss, has always believed himself to be beyond salvation. An eerie mix of exorcism, a predatory stalker, and an unlikely attraction conspires to lure him into a murderous web of dark conspiracies.
Jack has slid further down the slope of despair. Someone is systematically slaughtering young travellers and dumping their bodies in the city centre. Even in the state he´s in, Jack has an uncanny ability to know where to look, what questions to ask – but time proves to be his toughest opponent…
When a man is found crucified, Jack’s investigations reveal that the dead man’s brother was responsible for the death of Nora Mitchell- and the surviving members of the Mitchell family are in town, seeking revenge.
Jack is asked to locate a former nemesis of his who has been kidnapped and is being held for ransom, while also supporting Kate as she prepares for a major operation of her own.
Jack and Darragh are hired by the head of a large software company to find out who has stolen valuable games data from the company. Jack takes an liking to the main suspect, but when she is killed, Jack suspects his employer and vows to bring him down.
