Want to learn how to make and break TOP SECRET messages like a real
spy? If so, this book is for you! In this exciting, award-winning
nonfiction companion to the debut series SECRET AGENTS JACK AND MAX
STALWART, readers ages 8 - 12 years old can learn behind-the-scenes
codebreaking and spy skills.
Inside are more than 80 pages of tips, tricks, and practice exercises
for writing and deciphering cryptic communications. You'll learn how to
make your own invisible ink, hide your messages, create unbreakable
ciphers, and craft your own decoder gadgets. You can use this manual to
learn how to exchange top secret notes with friends.