Hannah Murray

Years after the shocking murders that made the name Charles Manson synonymous with pure evil, the three women who killed for him - Leslie Van Houten (Hannah Murray), Patricia Krenwinkel (Sosie Bacon), and Susan Atkins (Marianne Rendón) - remain under the spell of the infamous cult leader (Matt Smith), until empathetic graduate student Karlene Faith (Merritt Wever) is enlisted to rehabilitate them.