Jack Taylor is recovering from a mistaken medical diagnosis and a failed suicide attempt. Now that he's going to live after all, he's going to need money, so using his ex-Garda credentials he manages to land a job as a night-shift security guard. But his Ukrainian boss has Jack in mind for a bit of off-the-books work. He wants Jack to find what some claim to be the first true book of heresy, the famously blasphemous "Red Book," currently in the possession of a rogue priest hiding out in Galway after fleeing a position at the Vatican. Despite Jack's distaste for priests of any stripe, the money is too good to turn down. Then Em, the many-faced woman who's 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 Red Book, too-leading Jack down ever more mysterious and lethal pathways-in this "dark and often hilarious" series by an author who's won the Shamus, Macavity, and Barry Awards and been an Edgar Award finalist.