Kate (Amy Jo Johnson) moves back home with her young child to live with her sister following the death of her husband. As she begins to rebuild her life, in a small rural community, she quickly realizes that the Doctor for whom she works is really a psychotic serial killer. His victims are his elderly patients whom he kills with snake venom. As she begins to unfold his dark secrets, she finds she is in as much danger as his victims. With the help of the love of her life they expose the killer before he can strike again.
