1. Discuss the ways in which Harry changes both physically and mentally because of his "year" in the playhouse.

2. Lucy Coolidge is not crucial to the plot of Singularity. What is her role in the novel and in what way does she help define the differences in the twins' personalities?

3. Discuss the literal and figurative meaning of the novel's title.

4. How are Harry and Barry different? Discuss how being a twin affects each of them.

5. How does Harry's attitude toward "The Approaching One" change during his stay in the playhouse?

6. What is significant about the way "The Approaching One" behaves when it arrives on Earth? Do you think that it was sent intentionally or merely entered the "Singularity" by accident?

Support your answer.

7. The paperback edition of the book shows the twins and Lucy staring into the pool of water in the playhouse sink. Try...