Top Secret: The Ultimate Invisible Ink Activity Book (Klutz

An activity book to beat the boredom blues, packaged with a UV invisible ink pen with built-in revealer light!Battling the I-Have-Nothing-To-Do Blues?

The Ultimate Invisible Ink Activity Book

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Klutz: Top Secret: The Ultimate Invisibile Ink Activity Book by Editors of Klutz

Top Secret: The Ultimate Invisible Ink Activity Book (Klutz

Top Secret: The Ultimate Invisible Ink Activity Book (Klutz Activity Book): Editors of Klutz, Editors of Klutz: 9781338745283: : Books

As a detective, you always need the right tools when you are on the hunt for evidence or reading secret messages. Ultraviolet light helps you uncover many hidden clues. Exchange top secret info with your friends and fellow agents using this high-tech device. The pen uses a special ink that only becomes visible under ultraviolet light, like the one emitted by the flashlight on its opposite end. You can also use the UV light to find other objects and materials that glow.

Spy Labs Invisible Ink Pen and UV Light

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