Kelley Armstrong: Personal Demon [2008] paperback

Hope Adams, tabloid journalist and half-demon, inherited her Bollywood-princess looks from her mother. From her demon father, she inherited a hunger for chaos, and a talent for finding it. Like full demons, she gets an almost sexual rush from danger - in fact, she thrives on it. But she is determined to use her gifts for good. When the head of the powerful Cortez Cabal asks her to infiltrate a gang of bored, rich, troublemaking supernaturals in Miami, Hope can't resist the excitement. But trouble for Hope is intoxicating, and soon she's in way too deep. With a killer stalking the supernatural hot spots of Miami, Hope finds herself dangerously entangled, and has no choice but to turn to her crooked werewolf ex-boyfriend for help. What started as a simple investigation has spiralled into chaos. And Hope finds chaos irresistible ...