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• E.B. White Read Aloud Award for Older Readers (2008)
• Massachusetts Children's Book Award (2009)
• Iowa Children's Choice Award Nominee (2011)

"Are you a gifted child looking for special opportunities?" When this peculiar ad appears in the newspaper, dozens of children enroll to take a series of mysterious, mind-bending tests. (And you, dear reader, can test your wits right alongside them.) But in the end just four very special children will succeed. Their challenge: to go on a secret mission that only the most intelligent and resourceful children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules. As our heroes face physical and mental trials beyond their wildest imaginations, they have no choice but to turn to each other for support. But with their newfound friendship at stake, will they be able to pass the most important test of all?This tenth anniversary edition of The Mysterious Benedict Society includes over thirty pages of bonus materials that will delight old and new fans alike.

Note: While we do our best to ensure the accuracy of cover images, ISBNs may at times be reused for different editions of the same title which may hence appear as a different cover.