Dennis (USA: PA) (2008/04/22): I enjoyed this book. It's typical Dan Brown - short chapters and fast paced. If you like any of his other books, you'll more than likely enjoy this one. You'll especially take interest in it if you have any knowledge or an interest in computer technology.
mellonhead (USA: TX) (2008/05/05): This was a pretty weak storyline and weaker characters. I found the pace enjoyable and it was a quick and easy read, but nothing great.
Fred S. (USA: PA) (2009/09/11): Masterful...with gradual acceleration and intensification of dangers that held my attention from the first page.
Kelly (USA: FL) (2011/01/02): Just got the book yesterday and could not put it down. What a gripping exciting story!