I'm a sucker for a serial killer mystery, but this one fell short from his other books to me. Don't get me wrong, it's still a damn good book but I've come to expect more. I enjoyed the discussion of vampirism as well as the dynamics of a serial killing duo. However I felt a lack of tension and the perpetrator was obvious to me from the get-go. But I'm glad that he knew when to call it quits with Zoe's story, unlike other thriller authors.