Silence Fallen - Patricia Briggs

Silence Fallen is book number ten in the Mercy Thompson series.

Now that Adam and Mercy are presiding over a tenuous peace of sorts in their territory they've become a target. Mercy is kidnapped by the most powerful vampire in Europe, maybe the world. Mercy manages to escape, but getting away safely will require the help of all the friends and enemies she can count on. Even some ghosts. Very highly recommended.