The devil you know - Jenna Black

Some people worship them. Some people fear them. And some people, like Morgan Kingsley, are trained to fight them. An exorcist by trade, Morgan is one of the few humans with an aura stronger than her possessor, even though her demon can tease her body senseless. She's also a woman who has just discovered a shocking truth: everything she once believed about her past and her identity may have been a lie...And when the one man who's ever loved her is dragged into the storm, Morgan can't afford to wait for the next terrifying surprise. A rogue, sociopathic demon has entered her life with a bang. His name is The Hunter. And since she is the prey, Morgan has only one choice: to bring The Hunter down - no matter what heartbreaking truths she uncovers on the way...