Over 100 secret messages to solve and crazy codes to crack. Each story involves some sort of code, such as a mystery letter or secret message, which you need to crack to find the hidden meaning.

 

This book is part of a book series called Mensa Childrens Titles .

There are 224 pages in this book. This book was published 1997 by Welbeck Publishing Group .

Robert Allen was Editorial Director of Mensa Publications for ten years and a founder of Carlton Books' puzzle list. Published around the world, he has more than two dozen puzzle books to his credit. He lives close to Cambridge.