Dave Cullen spent the last ten years scouring police reports, interviews, diaries, and videos of the assailants and their victims. Columbine is a meticulously crafted narrative of both the massacre and events leading up to the fateful day. Though the majority of us remember this as retaliation against insensitive jocks and popular kids, Cullen pursues this story beyond the easy explanations to uncover the truth behind this confusing tragedy. I can't put this book down. It has consumed my weekend. Check it out.