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...

Add some mystery to travel days and test sleuthing skills with this super-cool, portable Secret Decoder mystery and activity book! In The Case of Slippery Flippers, junior detectives will help Gary Gumshoe follow the clues to solve an important...