The Killer's Cousin is a very suspensful page turner, I just didn't want to put it down! The books is about a teenage boy named David who is sent to go live with his Aunt Julius, Uncle Vic, and his cousin, Lily. David has to redo his senior year because he was unable to complete the previous schoolyear due to him murdering a girl named Emily. But David quickly realizes something is wrong with his new household. He sees all sorts of strange occurances, and there is something strange about Lily.