This book was shit. I have read all Landon books, after I went through the Angels and Demons audio book and loved it. For me that is still Brown's magnum opus. All books before and after are crap. This one is as insufferable as Digital Fortress. A difficult read because it's just so bad. A big problem is that I know about technology and just can't look over the glaring issues. I think this was my last Dan Brown book.