The final clue uses a Cardan Grille, named for Girolamo Cardano. Ask for the “grille” at the Information Desk and then use it to cover the sign about April Gupta on the side of the table where museum passes are kept. If you can’t find the museum passes, ask at the Information Desk. Once you have covered the sign with the grille, you will see two words. Write them down in the order displayed. You can borrow the TOP SECRET book at the Information Desk if you need more help. Read more about Cardan Grilles here.
