Voidbreaker
"Monsters have begun retaking the capital city of Londheim and claiming it for themselves. Humanity, fearful of being pushed out for good, has reacted with violence and destruction. Peace between the two races seems all but impossible.Devin will need to bring all his skills to bear in order to protect his friends and family amid the chaos. But the greatest threat to humanity's safety may well be closer than he expects. His sister is the most powerful priestess the world has ever seen . . . and she's fighting for the monsters."--Publisher.