A sleuthing contest brings Big Red and Old Red to Chicago during the World's Columbian Exposition, but when the man behind the competition is found dead, the only ones who believe that it's murder are Old Red, his brother, and an old friend who could hold the key to the mystery.

World's Greatest Sleuth! 2011, Minotaur Books, New York, NY

ISBN-13: 9780312379438

Hardcover

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World's Greatest Sleuth! 2011, Tantor Audio, Old Saybrook

ISBN-13: 9781452600130

CD edition

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World's Greatest Sleuth! 2011, Tantor Audio, Old Saybrook

ISBN-13: 9781452650135

MP3 format

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World's Greatest Sleuth! 2011, Tantor Audio, Old Saybrook

ISBN-13: 9781452630137

Library edition

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