2019: Under cover of darkness, Kate flees London for ramshackle Weyward Cottage, inherited from her great-aunt. The cottage is worlds away from the abusive partner who tormented Kate. But she begins to suspect that her great-aunt had a secret. 1619: Altha is awaiting trial for the murder of a local farmer. Her mother taught her their magic, which is rooted in a deep knowledge of the natural world. But as the evidence for witchcraft is set out against Altha, she knows it will take all of her powers to maintain her freedom. 1942: As World War II rages, Violet is trapped in her family's grand, crumbling estate. Her mother was rumored to have gone mad before her death. The only traces Violet has of her are a locket bearing the initial W and the word weyward scratched into the baseboard of her bedroom.