In short, while difficult to read because of the disturbing nature of the subject, this book was one of the best I've read in a long time and I recommend it to anyone, again with the caveat that Cullen is transparent in his knowledge. He presents the facts and tells things like they are, which at times is tough to handle. But in the end, when tragedy occurs, people want to know why. And through Columbine, Dave Cullen helps readers understand why. 5 stars
Check out Sarah's thoughts on the book in her review from September 2010 here.