1640 Jersey. Rue Underwood has long understood that her magic could kill her. In an age where witches are reviled and hunted gleefully by men like Elias le Cerf, the notorious Witchfinder, it's crucial that she remain hidden. But when whispers reach Elias's ears of Rue's abilities, he sends his new apprentice - his son, Theo - to find Rue and bring her in. But after one chance moonlit meeting, everything changes. In a world where witches burn, loving the enemy is the most dangerous magic of all.