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.