Based on Lisa Desrochers' teen novel trilogy, which also includes the novels Original Sin and Last Rite. The first book, released in 2010, is officially described as follows: Frannie Cavanaugh has always been a bit of a loner. She's spent years keeping everyone at a distance, even her closest friends. That is, until Luc Cain enrolls in her school. He's hot, sarcastic, and dangerous — and Frannie can't seem to stay away. What she doesn't know is that Luc is on a mission. Because Frannie isn't exactly ordinary. She possesses a skill so unique that the king of Hell himself has taken notice, and he's sent Luc to claim Frannie's soul. It should be easy: All he has to do is get her to sin, and Luc is as tempting as they come. Unfortunately for Luc, Heaven has other plans, and he's just started making progress when the angel Gabriel shows up. Gabe will do anything to keep Luc from getting what he came for, and his angelic charm might just be enough to keep Frannie on the right path. It isn't long before Luc and Gabe find themselves fighting for more than just Frannie's soul. But if Luc fails to win her over, there will be Hell to pay... for all of them.