When ex-FBI agent Rebecca Marte considered the possible challenges of her new career as a private investigator, she never thought one of them would be to investigate a witch charged with killing a man during a coven ritual. The job should be easy as six icons of the St. Louis business community, the rest of the coven, had seen their High Priestess, Della Bergeron, standing over the body, covered in blood, declaring she'd kept her promise to be with him to the end. Unfortunately, Rebecca's client wanted the witch cleared. Then, the difficult case became nearly impossible when Bergeron offered her defense. She was innocent by reason of possession. After eliminating every method to coerce another that she understood-death threats to self or family, relentless emotional abuse, reality-altering drugs-Rebecca found herself wondering what dark demons might lay hidden in the witch's mind that took control. Thrust into that uncharted territory, she sought to involve her psychologist friend, Dr. Sam "Doc" Price, both to help her with the case and him with a losing battle to find his kidnapped fiancée.