I thought this book was a fascinating account of what we refer to as Columbine. I knew what I saw in the media at the time - 2 teenage boys, part of the Trenchcoat Mafia, who were after jocks and popular people. They were outcasts and troubled. Now I can't be sure that everything here is true either but clearly there is a lot more information available and a lot of time was spent researching the details. There were times when I thought it was slow but overall learning the details of what happened that day and to many of the survivors was interesting.