Separated from the world she calls home, Abby Hart is forced to undergo rigorous training. The plains of Jagadoon offer her a chance to prepare for the upcoming battle, but she knows that this particular type of training can often be lethal. And then, one day, a visitor arrives with a terrifying message. Gothos itself is in danger. Dark forces are preparing to reignite the most horrific war that has ever been fought. As she makes her own preparation for a final confrontation with Abby, Emilia starts to realize that her father's plans involve destruction on an epic scale. Before she has a chance to challenge him, however, she discovers that the time has come to launch an assault on the home of the vampire species. Demon's Grail - Evolution is the fourth book in the Abby Hart series. This is the 2022 edition of the original 2015 book.