A searing take on femininity and power, Marrow transports readers to a small island off the coast of Maine, where a fertility coven has done the impossible: given childless women the chance to become mothers. The day Oona was kicked out of her mother's coven at eighteen, she gave up on her dreams of harnessing the witchcraft she'd imagined was her birthright. Years later, she's carved out an ordinary life with her husband, though she is filled with a longing she can barely name. If she can only carry a pregnancy to term, become a mother, then--according to island lore--she will come into her magic. But after multiple pregnancies end in miscarriages, Oona begins to feel desperate. Without the money to seek medical treatment, she decides she must return to the rugged, windswept island where she was raised--and to her dark, enigmatic mother whose coven claims to be able to harness witchcraft to help women struggling to conceive. Due to her acrimonious departure, Oona will have to return