Everything Conatus stands for is at risk. Hoping to gather enough resistance to save their order, Ember and Barrow attempt a desperate escape. But fate offers little mercy. When their mission is exposed, the couple faces relentless pursuit by the supernatural horrors that act on the commands of Eira’s ally: the mysterious Bosque Mar. A shocking revelation forces Ember out of hiding, sending her back into the heart of dark magic at Tearmunn keep, where she must convince her old friend Alistair of her love or face dire consequences. Ember’s deception offers the only change for the resistance to succeed, but what she discovers in the shadows beneath the keep will shatter her world and bring about the Witches’ War.