Part of the Shinoy and the Chaos Crew non-fiction series, this information book ties into The Day of the Haunted House. Find out the answers to questions you've always wanted to know about secret codes. You probably use codes every day to communicate.
Find out how secret codes were used to send messages, and how you can become a codebreaker
Find out how secret codes were used to send messages, and how you can become a codebreaker