A threatened mother and relentless detective collide in this mesmerizing novel from a rising voice in literary horror, perfect for fans of Gabino Iglesias, Carmen Maria Machado, Augustina Bazterrica, and Stephen Graham Jones. A mother's love is the oldest curse Fortuna Miércoles has finally moved her family to a better neighborhood across the Rio Grande, desperate to outrun the curse that's stalked her bloodline since her greatest grandmother crossed the desert with a cactus thorn splitting her throat. But burying a family's violent legacy isn't so easy. Twenty years ago, girls and women vanished into the Albuquerque night, their bones later unearthed on the mesa. The so-called Reaper was never caught. Now, beneath the dormant volcanoes called the Sleeping Sisters, the killings have begun again. Detective Jeanette Palacio has spent decades chasing the ghosts of her murdered cousins--alongside the memory of the other women she couldn't avenge. When a new body turns up in Fortuna's backyard, both women are pulled into a dangerous, ancient plot. Are the Sleeping Sisters awakening--or has someone in Fortuna's family set a trap? Inspired by true events and shot through with a Chicana-Indigenous reimagining of the legend of the headless woman, The Sleeping Sisters is a fevered, feral hymn to motherhood and the monstrous bargains we make to protect those we love.