Cornwall, 1628. A young girl guards a dangerous secret: she can leave her body and fly. Steeped in herbal lore and forbidden spells, the girl becomes a woman, while across the land whispers of witchcraft turn deadly. When witchfinder Matthew Hopkins sets out to hunt her down, their meeting will change the course of history. In a world that fears what it cannot explain, a story shared is the most potent magic of all.