Overview

Can you crack the case with six clues or less? Moon Hollow's town library is a favorite spot for the Mysterious Four. But when the strange, masonic glyphs that decorate the building prove to be a secret code, they discover there's more than books hidden away inside. Embarking on a treasure hunt, Viola, Sylvester, Rosie, and Woodrow must run a gauntlet of mysteries and puzzles--and readers are invited to guess alongside them with every new clue they uncover. Each book comes with an exclusive code so that readers can download a FREE copy of the e-book . . . which includes an extra mystery unavailable anywhere else!

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9780545299817

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Author Information

Dan Poblocki is the author of the middle-grade novels THE STONE CHILD (2009), THE NIGHTMARYS (2010), and THE GHOST OF GRAYLOCK (2012), as well as the Mysterious Four series. He grew up in Rhode Island and New Jersey, and currently lives in Brooklyn, New York. Visit him online at www.danpoblocki.com.

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