Dead Witch Walking is a novel written by Kim Harrison. It was first published in 2004 and is the first in The Hollows book series.
Description[]
All the creatures of the night gather in "the Hollows" of Cincinnati, to hide, to prowl, to party... and to feed.
Vampires rule the darkness in a predator-eat-predator world rife with dangers beyond imagining - and it's Rachel Morgan's job to keep that world civilized.
A bounty hunter and witch with serious sex appeal and an attitude, she'll bring 'em back alive, dead... or undead.