Sommerton Hight is in lockdown! A fiendish prankster is on the loose. Someone has planted a fake bomb in the playground and the whole school is freaking out! It doesn't take the police long to realise it is a fake. But, two days later, a series of petty thefts rocks the neighbourhood. Who is behind ...
There has never been a better time for codes and cryptograms. With the phenomenal success of The Da Vinci Code, cryptology has reached a mainstream audience. For thousands of years the code makers and code breakers have battled for possession of vital secrets. This book contains many of the ingenious ...