Celebrate the 20th anniversary of the international bestselling Spiderwick Chronicles and get ready for the series soon to be streaming on Disney+ with the third installment in the adventures of the Grace children. Things at the Spiderwick estate are out of control. As if being attacked by goblins and a bridge troll weren't enough, Jared is now being targeted by the house boggart, Thimbletack.Simon is keeping an injured and very hungry griffin hidden in the carriage house. And Mallory is convinc...