Melissa & Doug On the Go Secret Decoder Activity Book - The Case of the Runaway Ruby

Young sleuths will love helping Gary Gumshoe find Madame Mahvelous’s missing ruby! This exciting spy activity book has 18 game pages of mysteries to solve. A few turns of the included decoder wheel--bound right into the book and visible from every page--will help detectives-in-training complete each challenge as they put their deductive skills to the test! To uncover even more case-cracking clues, master mazes, and complete puzzles, 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.