by Martin Chatterton (Illustrator), Martin Chatterton (Illustrator), Kjartan Poskitt (Author), Martin Chatterton (Illustrator)
A pack which includes a book of secret codes with a free invisible pen and developer to help you become the mastermind behind a whole network of secret agents. Leave your friends guessing as you find out why pig pens make great homes for messages; talk nonsense with numbers; see the light, send morse code with a torch, pass on some hot gossip without burning your fingers. Create your own crafty codes, send secret signals and learn how to write letters that mean more than they seem to.
Format: Illustrated
Pages: 32
Publisher: Scholastic Hippo
Published: 15 Jan 1999
ISBN 10: 0590199935
ISBN 13: 9780590199933