This is book number 14 in the Jack Taylor Novels series.
As well-versed in politics, pop culture, and crime fiction as he is ill-fated in life, Jack Taylor is recovering from a failed suicide attempt. In need of money, Jack has been hired as a night-shift security guard. But his Ukrainian boss has Jack in mind for some unexpected off-the-books work--getting his hands on what some claim to be the first true book of heresy, The Red Book, which is currently in the possession of a rogue priest hiding out in Galway. Despite Jack's distaste for priests of any stripe, the money is too good to turn down. Em, the woman-of-many-guises who has had a vise on Jack's heart and mind for the past two years, reappears and turns out to be entangled with the story of the same blasphemous book. As the novel twists toward a violent end, Jack is increasingly plagued by ghosts--by the disposable and disposed of in a city filled with as much darkness as the deepest corners of Jack's own mind.