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! "A clever presentation of entertaining puzzles...."--Mathematics Teaching in the Middle School. 128 pages, 25 b/w illus., 5 3/8 x 8 1/4.