As if being attacked by goblins and a bridge troll weren\'t enough, Jared is now being targeted by Thimbletack. Simon is keeping an injured and very hungry griffin hidden in the carriage house. And Mallory is convinced the only way to get things back to normal is to get rid of the Guide. But that doesn\'t seem to be an option....

Thanks to the mysterious book left behind by their long-lost great-great-uncle Arthur Spiderwick, life for the Grace kids -- Jared, Simon, and Mallory -- becomes more unpredictable than ever....