3. What is the first writing of 16's that Piranesi comes across?
(a) A note to the police.
(b) A warning for the Other.
(c) Directions 16 seems to have written to himself.
(d) A note to Laurence Arne-Sayles.

4. Where does Piranesi find the missing pages on Ketterley from his journals?
(a) In the scraps of paper he had collected from the birds' nests in the Eighty-eighth Western Hall.
(b) In the bag the Other left at the Minotaur statues.
(c) In the bag 16 left in the vestibule.
(d) In the journals hidden under his mattress.

5. What does Ketterley use for the ritual?
(a) Ribbons.
(b) Ancient dancing.
(c) A candle.
(d) Flute music.

6. Why does Ketterley say Arne-Sayles most often described the other world as a labyrinth?
(a) Because of its references to American literature.
(b) Because of its association with academia.
(c) Because of its association with the stars.
(d) Because of its associations with a vision of cosmic grandeur.

7. What is the simple, single-line message 16 leaves for Piranesi in Part IV?
(a) Do You Remember Your Name?
(b) Are You The Other?
(c) Are You Matthew Rose Sorensen?
(d) Are You Alone?

8. What does Piranesi take out of his hair?
(a) Shells and ornaments.
(b) The gray, using hair dye.
(c) The lice.
(d) The lint.

9. Who is Piranesi stunned to find in his journal index in Part III?
(a) Sylvia D'Agostino.
(b) 16.
(c) Matthew Rose Sorensen.
(d) Stanley Ovenden.

10. Which of the following were some of the jobs James Ritter once worked at?
(a) Lawyer, soldier, and accountant.
(b) Doctor and nurse.
(c) Actor, director, and stage hand.
(d) Model, waiter, barman, and prostitute.

11. Where does Piranesi keep his journals?
(a) Behind the Faun statue.
(b) On a statue in the North-Eastern Corner in a leather messenger bag.
(c) Under his bed.
(d) Near the First Vestibule.

12. Where was the house Arne-Sayles grew up in?
(a) Surrey.
(b) Lyme Regis.
(c) Essex.
(d) Charlington.

13. What smell does Sorensen immediately detect in Ketterley's house that seems out of place?
(a) A smell of the forest.
(b) A smell of rain, clouds, air, and the sea.
(c) A smell of sandalwood.
(d) A smell of roses.

14. How does Piranesi come to predict the event that is going to occur shortly in Part IV?
(a) By reading the books the Other has left for him.
(b) By watching the celestial bodies.
(c) By recording the temperature differentials in the Great Halls.
(d) By consulting the Table of Tides he keeps.

15. What does Ketterley bring Sorensen to drink in Part IV?
(a) Wine.
(b) Coffee.
(c) Soda.
(d) Whiskey.