The Clue of the Left-Handed Envelope (Third-Grade Detectives #1) Paperback – January 1, 2002 by George E Stanley (Author), Salvatore Murdocca (Illustrator) 6.6Third Grade Detectives #1: The Clue of the Left-Handed Envelope$6.95PriceFormat*SelectQuantity*Add to CartProduct DetailsPublisher : Scholastic (January 1, 2002) Reading age : 7 - 8 years, from customers