Blood Bound Mercy Thompson, Book 2 By: Patricia Briggs

Mechanic Mercy Thompson has friends in low places - and in dark ones. And now she owes one of them a favor. Since she can shape-shift at will, she agrees to act as some extra muscle when her vampire friend Stefan goes to deliver a message to another of his kind. But this new vampire is hardly ordinary - and neither is the demon inside of him.
Have Mercy: listen to another Mercy Thompson chiller.©2007 Patricia Briggs (P)2009 Penguin