I'm in the midst of reading Dave Cullen's book Columbine; I plan to go to a book reading where both he and Arnie Bernstein the author of The Bath Massacre will appear. With 20/20 hindsight and access to previously sealed documents, this book gives a complete accounting of the events that day. Along the way he debunks almost every myth you might believe about the killers, the last words of a dying student, the police, and the investigation. Incredible book. A MUST read!