All-new action in the #1 "New York Times" bestselling urban fantasy series When mechanic and shapeshifter Mercy Thompson attempts to return a powerful Fae book she'd previously borrowed in an act of desperation, she finds the bookstore locked up and closed down. It seems the book contains secret knowledge-and the Fae will do just about anything to keep it out of the wrong hands. And if that doesn't take enough of Mercy's attention, her friend Samuel...