Who is Jimmy? Why does Jimmy have trouble going to school? Why did a school psychologist once interview Jimmy? What did he learn about Jimmy? Why does Jimmy decide to go to school this day? What happens there? Why does Jimmy leave early? What does he find when he returns home?

Who is Crab? Why is he at Jimmy's apartment? What does he want from Jimmy? When was the last time Crab saw Jimmy? Why has he been in jail? What does he plan to do with Jimmy? For what reason? How did Crab get out of jail? What story does he tell Mama Jean? Is it true? When does the reader learn the truth about Crab?

Why does Crab take Jimmy to Chicago? What do they do there? Why does Crab become ill there? Why does Jimmy have to rescue him? Who does...