-- Clues and red herrings on every page give readers opportunities to solve the case themselves -- Original fiction written by Usborne's Puzzle Adventures team -- Challenging puzzles utilize reasoning skills

The Missing Clue 1999, E.D.C. Publishing

ISBN-13: 9780881105230

Hardcover

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Missing Clue 1994, Educational Development Corporation

ISBN-13: 9780746005989

Trade paperback

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