On April 20, 1999, Dylan Klebold and Eric Harris, two seniors at Columbine High School in Littleton, Colorado, walked into their school and shot to death twelve students and one teacher, and wounded many others. It was the worst single act of murder at a school in U.S. history. Few people knew Dylan Klebold or Eric Harris better than Brooks Brown. Brown and Klebold were best friends in grade school, and years later, at Columbine, Brown was privy to some of Harris and Klebolds darkest fantasies and most troubling revelations. Brooks Brown, with co-author Rob Merritt, relates his personal experience of growing up with Dylan Klebold, one of the two Columbine shooters, and attending Columbine High School with Dylan and Eric Harris, the second shooter.