Recently divorced and mired in a meaningless existence, Clay drifts from his drab apartment to his equally lusterless job as an editor for a small Boston press--until the night Lucian finds him and everything changes with the simple words, "I'm going to tell you my story, and you're going to write it down and publish it." What begins as a mystery soon spirals into chaotic obsession as Clay struggles to piece together Lucian's dark tale of love, ambition, and grace-only to discover that the demon's story has become his own. And then only one thing matters: learning how the story ends.