What are codes for and who uses them? How do you make a code, how do you break a code? If you think only spies and soldiers use codes, you're wrong! Find out how codes have been used throughout history, from Ancient Egypt through to the Cold War in this enthralling non-fiction book by award-winning author, Richard Platt.

* Emerald/Band 15 books provide a widening range of genres including science fiction and biography, prompting more ways to respond to texts.

* Text type: A non-chronological report

* This book has been quizzed for Accelerated Reader.