Test your powers of deduction on 43 phony alibis, baffling clues, bits and pieces of evidence. Decipher codes as you match wits with such great detectives as Will Ketchum and Donna DiAnsa, as well as law enforcement officers like Luke Sharp, Hans Zupp and Carla Kopp. For many of the puzzles you'll find extra hints and clues to help you along, if you need them!

Packed with tips, hints and advice on all the tricks needed to be a super spy, including how to write and break codes, how to use disguises to avoid detection and how to stalk and shadow enemy spies effectively.

This was published in several formats with several renames and modernising.