Dan Brown is a mastermind of the written puzzle. I loved this book so much I had to go buy the hardcover for fear I’d lose the mobi file. Be prepared to be enthralled, to a point where you can’t put it down. If you’re a history buff, or just love fast-paced, action-packed and riveting novels that take you away, this one will take you through the streets and dark places of major cities throughout the globe. Brilliant!