Small Favor (The Dresden Files, Book 10)

THE "New York Times" Bestseller Harry Dresdenas life finally seems to be calming downauntil a shadow from the past returns. Mab, monarch of the Sidhe Winter Court, calls in an old favor from Harryaone small favor that will trap him between a nightmarish foe and an equally deadly ally, and that will strain his skillsaand loyaltiesato their very limits.