Poblocki, Dan. Mysterious four ##2

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! Dan Poblocki is the author of The Stone Child, The Nightmarys, The Ghost of Graylock, The Haunting of Gabriel Ashe, The Book of Bad Things, and the Mysterious Four series. He lives in New York with two adorable cats and more books than he has room for. Visit him at danpoblocki.com

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