Circus of the Damned (Anita Blake Vampire Hunter #3) by Laurell K. Hamilton

I'm Anita Blake, expert on creatures of the night. I've dined with shapeshifters, danced with werewolves, and been wooed - but not won - by Jean-Claude, the Vampire Master of the City.

And now a darkly dangerous vampire named Alejandro has hit town.
He wants me for his human servant.
A war of the undead has begun.
Over me...