by Grab a. Pencil Press (Created by)

Learn about the world of cryptography, or secret writing, with this collection of fascinating ciphers, anagrams, and acrostics. The military has used secret writing to share battle plans. Edgar Allan Poe popularized secret writing in his mystery story "The Gold Bug." Test your code-breaking skills through 11 puzzles, including examples using the Caesar Cipher, substitution ciphers, and Lewis Carroll's alphabet cipher.