Pssst! Want to learn how to make and break secret messages like a real spy? Of course you do! This practical field guide has everything kids need to know about the art (and science!) of concealment—ciphers, codebreaking techniques, and plenty of hands-on practice sessions to help you become a super-secret spy. Go undercover with your favorite Avengers, such as Iron Man, Thor, Captain America, and more. Avengers assemble!
In this must-have for fans of The Avengers, you can how to write and decipher hidden messages using:
- A message mask you can share with your friends for revealing secret messages
- A code wheel you and your friends can use to pass top-secret notes
- A special invisible ink pen along with the ink-revealing light pen
- A wax crayon and reveal spray bottle
- A red pen and red decoder lens
- A special 32-page book containing many secrets of the spy world
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