I read the book Columbine, which described how criminologists believe Eric Harris and Dylan Klebold were a “criminal dyad”, with Harris a born psychopath and Klebold a depressant who followed Harris. After reading the book twice, I am persuaded by that theory. However, if anything, that theory makes Dylan Klebold an even more chilling character than Harris. A true psychopath like Harris is born bad-to-the-bone; Klebold, on the other hand, freely chose to follow along and to laugh as he and Harris shot their friends and schoolmates.