Reading Level: Grades 7 and up
Kit's mother was a serial killer before she married. She had a drop box in London where people could request a murder and she marked each of her victims with a magic marker heart on their chest, but she never managed to reach the notoriety that most serial killers do. After "quitting" her mother uses her experience to train her only child to be a perfect killing machine. Kit takes over the drop box (with her mother's help) at age nine and, as she grows older and becomes independent, leaves her calling card, the letters cleaned of all DNA, with each of her victims. By the time she is seventeen she has reached Jack the Ripper status and is known to the public as The Perfect Killer. However, when she gets a request from a classmate to kill another classmate things begin to spiral out of control.