If you enjoy spy novels, then this is a great book for you to read.
If you do not enjoy spy novels, stay away from this book.
I like mysteries, but cannot "get into" espionage. This book was no exception. I found myself having to go back and re-read entire passages because I had zoned out. I just did not connect with the book at all. If you have a love for the great spy novels of yesteryear, than you will understand all of the references throughout the book. I did not. Which is probably another reason I didn't enjoy this book.
That being said, I am able to appreciate the book from an objective standpoint. It is a smart story and well written with an interesting concept.
I'll probably pass along the book to my dad who will love it.