3 of 3 people found the following review helpful
on 20 January 2004
This was an excellent read. I really enjoyed every page of this book. What amazes me about it (and, in fact, every book in "The Knowledge" series) is how much I learnt from them. After being thoroughly entertained by the adventures of code-cracking secret agent Luke Warm, I suddenly realised that I knew an awful lot more about codes than any other book had ever told me. Many "serious" non-fiction books leave you so bored that all the information goes in one ear and out of the other. Not so this one! I would recommend it to everyone, everywhere. Honestly.
2 of 2 people found the following review helpful
on 7 November 2003
This book was so interesting that I had to read it slowly to make sure I absorbed every word. Not only does it explain how some really tough codes work, there's masses of fascinating historical detail about how making and breaking codes changed the course of wars. It even explains how the enigma machine worked. I loved it.