Beth, who is a psychotherapist, receives a letter from Ellison, a serial killer who murdered Beth’s mother, asking her to visit him in prison but she decides not to since all she wants to do is kill him.
Beth’s apartment is broken into and a list of Beth’s clients is missing.
An officer from victim support contacts Beth warning her, Ellison has escaped from prison and Beth fears he now knows where her clients live.
Beth begins to visit all six of them, only to discover a trail of blood. Two of her clients have been murdered.
With the help of the police, Beth takes the rest of her clients to a safe house, while they wire-up and monitor her and she endeavours to track Ellison down.
Finally in his thrall Beth wants to end Ellison’s life but instead she uses her psychotherapy skills try to turn him, to save her clients.