A legendary Demon Trapper, Riley Blackthorne frequently battles with Hell's minions. So when she travels to Scotland to meet up with her hunky boyfriend, and celebrate her eighteenth birthday, she's thrilled at the chance to leave Atlanta and its troubles behind.

Denver Beck, who has been studying for months to become a Grand Master - a rare and highly dangerous job -- is just as eager to see his girl. He's anticipating a romantic reunion, keen to take their relationship to the next level. But Riley's twisted history with Hell has garnered unwelcome interest...