Kit takes her role as London’s notorious “Perfect Killer” seriously. The letters and cash that come to her via a secret mailbox are not a game; choosing who to kill is not an impulse decision. Every letter she receives begins with “Dear Killer” and every time Kit murders, she leaves a letter with the dead body. Her moral nihilism and thus her murders are a way of life - the only way of life she has ever known. Dear Killer is a sinister psychological thriller that explores the thin line between good and evil.