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Invisible Ink Pen Kit (International Spy Museum Series) (Paperback)

Write your loved one a private note. Hide a secret message in your child’s lunch. Unsettle your rival at a business meeting. Now you can practice your espionage skills–without leaving a paper trail! This whimsically serious kit will delight fledgling spies. Included is an invisible ink pen with a miniature black light to reveal cryptic messages. The text in the 32-page book–drawn from the expertise of the International Spy Museum (the only museum of its kind, solely dedicated t (more…)

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