If you liked Dan Brown’s Da Vinci Code—or want to solve similarly baffling cyphers yourself—this is the book for you! A thrilling exploration of history�

"This is the story of the Allied codebreakers puzzling through the most difficult codebreaking problems that ever existed.

Simply and clearly written book, filled with cartoons and easy-to-follow instructions, tells youngsters 8 and up how to break 6 different types of coded message

If you liked Dan Brown’s Da Vinci Code—or want to solve similarly baffling cyphers yourself—this is the book for you! A thrilling exploration of history�

The story of Bletchley Park, the successful intelligence operation that cracked Germany's Enigma Code. Photos.