When a twelve-year-old evil genius tries to restore his family fortune by capturing a fairy and demanding a ransom in gold, the fairies fight back with magic, technology, and a particularly nasty troll.

Isobel is a prodigy portrait artist with a dangerous set of clients: the sinister fair folk, immortal creatures who cannot bake bread, weave cloth, or put a pen to paper without crumbling to dust. They crave human Craft with a terrible thirst, and Isobel's paintings are highly prized. But when she receives her first royal patron--Rook, the autumn prince--she makes a terrible mistake. She paints mortal sorrow in his eyes--a weakness that could cost...

"Mercy Thompson has been hailed as "a heroine who continues to grow and yet always remains true to herself."* Now she's back, and she'll soon discover that when the fae stalk the human world, it's the children who suffer... Tensions between the fae and humans are coming to a head. And when coyote shapeshifter Mercy and her Alpha werewolf mate, Adam, are called upon to stop a rampaging troll , they find themselves with something that could be used...

"In this electrifying new entry in the #1 New York Times bestselling urban fantasy series, shapeshifting mechanic Mercy Thompson will face a threat unlike any other. . . . I am Mercedes Athena Thompson Hauptman. My only "superpowers" are that I turn into a thirty-five-pound coyote and I can fix Volkswagens. But I have friends in odd places and a pack of werewolves at my back. It looks like I'm going to need them. Centuries ago, the fae dwelt in Underhill-until...