HOW TO PLAY: Gather clues and use your magic ink pen to uncover the truth, solve the mysteries and puzzles with the popular Yes & Know Line-up activity books. Contains 48 pages of mysterious fun!
MYSTERY BUNDLE: This Secret Agent Spy & Game Book includes an invisible ink pen. This invisible ink game book includes several trivia activities including decode the cryptograms, decipher krazygrams, and nab the crook in jailbreak.
MYSTERY FUN: Mystery lovers this is for you! Gather hints and find the clues together with Mr. Mystery invisible ink book. Feel the thrill as you go along your journey and solve the mystery book!
TRAVEL TRIVIA GAMES: Awesome choice for on-the-go kids travel mystery fun. Includes a hardback cardboard piece for writing support. The mystery ink pen won’t leave any stains in the case of any unexpected short-stops.
SUPERIOR QUALITY: Ensuring quality and safety is our highest priority. This invisible ink book is safe and non-toxic to ensure safe trivia mystery solving fun for inquisitive kids of all ages.