27 year old Kat Larson is haunted by demons. Literally. And how was she to know that there was more than one type of demon? The Evils want to destroy her soul, while billionaire Sentinel demon, Zachary Winston, claims that he wants to protect her. Kat opts for Zach's protection...but it doesn't come without a price. It requires a demon bargain...and what he suggests surprises poor Kat almost as much as the fact that demons really do exist. Why would...