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Melissa & Doug – On the Go Secret Decoder

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  • Travel-size Secret Decoder activity and story book with clues to find and a case to solve
  • Includes 18 mystery game activity pages, decoder lens, and magic-reveal pen
  • Special Seek & Find Lens and Spy Pen are easy to use and a valuable addition to any great detective’s tool kit
  • Crack the codes and complete the puzzles and games to solve individual mysteries and the whole case
  • Helps teach cognitive development and problem solving, and encourages independent play

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 case, while doing a variety of activities along the way. Use the handy Seek & Find Lens to spy hidden clues, and the Spy Pen to magically reveal more hints to guide Gary to his final destination; detective tools store conveniently right in the travel-size book cover! All 18 pages of activities include mazes, seek-and-find pictures, puzzles, word scrambles and more. A perfect take-along activity book, the On-the-Go Secret Decoder book helps teach cognitive development and problem solving, and encourages independent play.


  • Product: 9.65 x 5.65 x 0.4
  • Package: 0.4 x 5.65 x 9.65
  • Please note all dimensions are listed in inches

Additional information


The Case of the Runaway Ruby, The Case of the Slippery Flippers


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