A perfect blood
by Kim Harrison

Popularity 24
When she discovers that a would-be creator is determined to make his (or her) own demons and needs her blood, former witch-turned-day-walking-demon Rachel Morgan, a bounty hunter, faces her toughest adversary yet --humanity.
VampiresWerewolvesFictionVoyages and travelsWomen bounty huntersWitchesRachel Morgan (Fictitious character)ElvesBloodDemonologynyt:hardcover-fiction=2012-03-11New York Times bestseller