Angelfire is a series of young adult urban fantasy novels by author Courtney Allison Moulton, beginning with the inaugural entry of the same name. The story follows a teenager named Ellie, who learns that she is actually the reincarnation of a powerful warrior, tasked with aiding angels in their battles against demons on Earth. Amidst this conflict, the tale follows her challenges in adjusting to her newfound role. Source: Wikipedia (en)