Synopsis according to GoodReads:
In the spring of 1628, the Witchfinder of Wessex finds himself a true Witch. As Bess Hawksmith watches her mother swing from the Hanging Tree she knows that only one man can save her from the same fate at the hands of the panicked mob: the Warlock Gideon Masters, and his Book of Shadows. Secluded at his cottage in the woods, Gideon instructs Bess in the Craft, awakening formidable powers she didn’t know she had and making her immortal. She couldn’t have foreseen that even now, centuries later, he would be hunting her across time, determined to claim payment for saving her life.
In present-day England, Elizabeth has built a quiet life for herself, tending her garden and selling herbs and oils at the local farmers’ market. But her solitude abruptly ends when a teenage girl called Tegan starts hanging around. Against her better judgment, Elizabeth begins teaching Tegan the ways of the Hedge Witch, in the process awakening memories–and demons—long thought forgotten.“