Amazed by a Maze!

The Problem Solving foursome of Max, Molly, Katrina and Brad follow clues from Italy to 1697 London in search of Mr. Conklin and Aunt Murgatroyd.  There they encounter a giant hedge maze.  Using their mathematical skills, they are able to work their way to a secret door in the ground.  But is Aunt Murgatroyd behind the trap door, or is it just a trap?