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.
Publisher: Scholastic Press
Published: 2011-08-01
Format: Paperback 192 pages
ISBN13: 9780545299817
ISBN10: 0545299810
