Melissa & Doug

Secret Decoder Game Book - 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 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.

Crack the codes and complete puzzles to solve the mystery!
Includes 18 activity pages, decoder wheel, and magic-reveal pen.