100 years ago mortal earth merged with the realm of Fairy in an event called the Sundering; in a small town in this new world where mortal earth and Fairy overlap someone is torturing and killing young women. The police don't have any good leads so they turn to Allie McCarthy, occult bookstore owner, to help them understand the ritual behind the murders. Allie wants to help but solving murders isn't her forte - old, rare books are what she knows best. Unfortunately for her it seems that a book might be at the center of it all, and she is the key to catching someone who definitely doesn't want to be caught. Things get complicated as Allie finds herself caught between the police - human and elven - and her friends, looking for a book she isn't sure exists, and trying to put the pieces together as quickly as she can. Add in romance, an out-of-control magical gift, two strangers willing to do anything to find the same book, and dark magic that might destroy both worlds and Allie's in way over her head.