After the alleged suicide of her priest brother, Grace travels to the remote Scottish convent where he fell to his death. Distrusting the Church's account, she uncovers murder, sacrilege and a disturbing truth about herself.
After initiation into the prestigious York Witches Society, Amber Gray and her new friends unwittingly awaken an ancient evil hellbent on destroying the Gray bloodline. As the witch hunt begins, the women realize they may not make it through the night.