2. What does Piranesi remember the Prophet having told him about what would happen the closer 16 gets to Piranesi?
(a) The more hungry Piranesi would become.
(b) The more mad Piranesi would become.
(c) The more dangerous Ketterley will become.
(d) The more joyful Ketterley would become.

3. Which of the following does Piranesi do in preparation for the significant event he has predicted will happen soon in the House?
(a) He gets special sunglasses to shield his eyes from the eclipse.
(b) He coats himself in water-proof oil.
(c) He takes the bones of the dead to higher ground.
(d) He gets a warmer coat.

4. What does Ketterley do when he spirits Sorensen to the other world?
(a) Dance around.
(b) Play music.
(c) Cry.
(d) Laugh.

5. Which of the following does Piranesi find in the bag he knows the Other must have left in the House in the end of Part IV?
(a) A knife.
(b) A flag.
(c) A gun.
(d) A container of hot food.

6. Who does Piranesi see the word Battersea associated with in his journals?
(a) 16.
(b) D'Agostino.
(c) Arne-Sayles.
(d) Ketterley.

7. What does Sorensen scream at Ketterley when he finds himself in the other world all of a sudden?
(a) Damn you!
(b) Put it back!
(c) Out!
(d) You will not get away with this!

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

9. Who do Piranesi's journals say Ketterley was a student of?
(a) Frangipani.
(b) Arne-Sayles.
(c) D'Agostino.
(d) Piranesi.

10. What does reading his journals over again in Part III convince Piranesi the Other was right about?
(a) Sarah Raphael was coming to save Piranesi.
(b) Piranesi had forgotten many things.
(c) Piranesi was probably from another world.
(d) Laurence Arne-Sayles was like a God.

11. How does Piranesi begin to think of his relationship with Matthew Rose Sorensen at the end of Part IV?
(a) It is as if Matthew Rose Sorensen is asleep within Piranesi.
(b) Matthew Rose Sorensen is like Piranesi's grandfather.
(c) Matthew Rose Sorensen is like a brother to Piranesi.
(d) Matthew Rose Sorensen is like a treasured colleague of Piranesi's.

12. How many years did Arne-Sayles spend in prison?
(a) 4 1/2 years.
(b) 10 1/2 years.
(c) 8 years.
(d) 1 year.

13. How does 16 refer to Laurence Arne-Sayles in her note to Piranesi?
(a) As Piranesi's father.
(b) As a friend of hers.
(c) As a colleague of hers.
(d) As an occultist.

14. What are some words from his journal entries that particularly confuse Piranesi?
(a) Adjectives like sly and silly.
(b) Nouns like car and sidewalk.
(c) Place names like Birmingham and Perugia.
(d) Concepts like betrayal and love.

15. What do Piranesi's journals say Matthew Rose Sorensen studied?
(a) Biology.
(b) Classics.
(c) Writing.
(d) Mathematics and transgressive thinking.