Use the decoder wheel to solve the mystery . . . then turn the page for a whole new challenge!
Melissa & Doug Secret Decoder Game Book - ON the GO Travel Activity Book is an exciting spy activity book with 18 pages of codes to crack.
A few turns of the included decoder wheel--bound right into the book and visible from every page--will help young detectives complete each challenge as they put their deductive skills to the test!
To uncover even more case-busting clues, sneaky double agents, and hidden treasure, a magic-reveal pen is included, giving every page plenty of play value.
It all stores neatly within the tab-close covers--perfect for spies on the go.