• Highlights: Secret Puzzle Fun Cover

Highlights: Secret Puzzle Fun

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Red reveal glasses and an invisible ink pen with UV light bring a unique puzzling experience to this engaging puzzle book.

This activity book combines the fun of secret codes and invisible ink. Packed with Hidden Pictures puzzles, codes puzzles, mazes, criss crosses, and riddle puzzles, kids can use the glasses and invisible ink to solve and enhance the puzzles. 
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Penguin Random House

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