Fireborn (Fireborn #1)

Lyra. Lucy. Percy. Once in a generation, a hero emerges whose story enthralls readers worldwide.

Ember is full of monsters. Twelve gave up her name and identity to train in the art of hunting them--so she says. The truth is much more deadly: she trains to take revenge on those who took her family from her. But when Twelve's new home is attacked, she'll find herself on an unexpected journey, where her hidden past is inescapably intertwined with her destiny--and the very fate of her world.