Alec Krieder knew his best friend's family never locked their doors―making Kevin Haines and his family the perfect targets for a crime. One night, he waited until they were asleep…then entered the house with a knife. Alec burst into the master bedroom and stabbed Tom and Lisa Haines first. Then he attacked Kevin, who fought for his life. Meanwhile, at the end of the hall, Kevin's sister Maggie awoke to the sound of violence―and was the only one who made it out alive.
Clean-cut and academically gifted, Alec seemed to have no motives, no history of psychosis―and no remorse. Some believed he was a serial killer in the making, a soulless monster plagued by "demons." Now, for the first time, acclaimed author Michael W. Cuneo shares the inside story―with shocking details of Alec's confession to his father, disturbing messages to his classmates, and chilling excerpts from his diaries―and takes you inside the dark, troubled mind of this teenage killer.