The Throne of Broken Bones (Weapon of Fire and Ash Book 3) by Brittany Matsen
Emma is in a race against time to break free from her father’s mark while the drums of war draw nearer. The darkness inside her is growing, so too is the hunger for power, which begs the question: Who will she be when it’s all over? Adrianna, forced to remain in Sheol with her controlling protector, has begun the work of altering Levaroth’s mind. But his sacrifice, along with her magic, will be just what Emma needs to survive.
For Blaze, his brother’s strange behavior, paired with the way Emma has withdrawn from him, forces him to seek allies and condemn his enemies–no matter how much he cares for them.
They must all work together to secure the future of the earth, but from the ashes, they will face their greatest enemy yet.