Book Haul is Back! 50% Off Hundreds of Hardcovers And More Deals Shop Now In Stores & OnlineBook Haul is Back! 50% Off Hundreds of Hardcovers And More Deals Shop Now In Stores & Online
Paperback
$9.99
Promotion message icon

Premium Members save an extra 10% and all Members collect stamps to save with Rewards. 10 stamps = $5.

Formats
In stock
This item is currently out of stock online.
Free standard shipping on orders over $60
Select a store to view item availability.
From breaking enemy agents' ciphers to translating long lost languages, help solve all kinds of secret codes and mysterious messages in this exciting book, which is packed with over 100 puzzles. With safe combinations to crack, computer systems to hack, and much more, there's plenty to keep young codebreakers busy on journeys, rainy days and holidays.