Tours languages that hide meanings from all but a chosen few, explains the difference between ciphers and codes, and shows how secret messages have been written and broken for years.

From the ingenious ciphers of Italian princes to the spy books of the Civil War to the advanced techniques of the CIA, codes and code breaking have played important roles throughout history.

When a mysterious letter written in code arrives at King's house for his human, Kayla, he follows the trail of the person who left it.

"Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information"-- Provided by the publisher.

Akiko, Mae, and Josie, also called the Infinity Trinity, spring into action after learning that a spy is betraying secrets to the Japanese military--and that Akiko's mother may be involved.

"One girl must unlock the secrets within Paradise Lost to save her father's life"-- Provided by publisher.

Wild card -- Parker -- Safe -- The bank job -- Home front -- The mechanic -- Crank. Wild card: A bodyguard goes after the sadistic thug who beat his friend, only to find that the object of his wrath is the son of a powerful mob boss. Parker: Parker is a thief who has an unusual code. He doesn't steal from the poor or hurt innocent people. He is asked to join four other guys, one of whom is related to a known mobster. They pull off the job flawlessly...