A serial killer stalks young women in Northern Wales. Known as the Wedlock Killer, he chops off a finger before brutally murdering his victims. Amid reports of a new victim, Laurie Wolf, a radio DJ, becomes bitter when her local radio program is cancelled and she has trouble finding a new job. On the last day of her show, she rants to her listeners about the disappearance of local radio programs and ignores the corporate playlist. Ben Evans, her engineer, suggests they have a psychic, Carla Zaza, as a guest. Laurie, a sceptic, reluctantly agrees when Ben says it will further annoy the owners.