Caleb tried to grab me, but the dark mist outstretched and grabbed me by the back of my neck, yanking my spirit back toward the ground. I heard Caleb shout for me in the distance as I watched the black mist circle above me as if I were trapped in the eye of a tornado.

Oh, my God.

Mercy is barely holding on after losing her coven, who sacrificed themselves to save her life. But even in death, Caleb opens a path for Mercy to rediscover the ancient power that once revived her after she died the first time on Gallows Hill in 1692.

To find the magic she needs to bring back her coven, Mercy and Dorian journey to a desolate island off the coast of Barbados and uncover long-hidden secrets from a native shaman tribe. But their presence is unwelcome, and Mercy finds herself harnessing the universal elements to save the lives of her beloved coven.

Meanwhile, Maurice continues plotting to destroy the supernatural world until every last human on earth bows to him. Knowing he can't kill Mercy, he conjures up sick and twisted games he can play with her in order to crown himself the Master of Hell.

Where there is pain and destruction, a new power emerges, and Mercy must hold on to faith that good will triumph over evil because, if not, Hell will consume them all.