Waking the Witch — Kelley Armstrong

Savannah Levine, golden girl of the supernatural world, has nothing to lose and everything to prove....

At twenty-one, Savannah Levine -- orphaned daughter of a notorious dark witch and a cutthroat sorcerer -- is a motorcycle-riding jaw-dropper with a wide arsenal of spells at her fingertips. With her adoptive parents out of town, Savannah is left to run their detective agency . . . and is presented with a case she just can't turn down when a hot half-demon walks in with a murder mystery brimming with supernatural clues. The only problem is that no one thinks the once rebellious hell-raiser can handle things on her own. Savannah soon takes off for the remote town with plenty to prove, and finds herself caught up in a web of lust, false identities, and dark forces that will force her to fight like she never has before.