Jane lives in London with Richard, her boyfriend. When she was five, her mother was murdered, and she recently lost a baby in a car crash. She's plagued by nightmares of a knife-wielding, blue-eyed man. Richard, a pharmaceutical salesman, thinks the cure is vitamins; Jane's sister Barbara, who works for a psychiatrist, recommends analysis; a neighbor Jane's just met promises that if Jane participates in a Black Mass, all her fears will disappear. Jane tries the Mass, but it seems to bring her nightmares to life.