Obsidian Butterfly (Anita Blake Vampire Hunter #9) by Laurell K. Hamilton

I WAS COVERED IN BLOOD, BUT IT WASN'T MINE, SO IT WAS OKAY.

Edward is a hit man. He specialises in monsters. Vampires, shape-shifters, anything and everything. There are people like me, Anita Blake, who do it legally, but Edward doesn't sweat the legalities or, hell, the ethics. He is an equal opportunity killer. I may be one of the few friends that Edward has, but it's like being friends with a tame leopard. It may curl up on the foot of your bed and let you pet its head, but it can still eat your throat out...