Chapters Eighteen and Nineteen Summary

In Chapter Eighteen, Petra and Calder discuss the goodness or lack thereof of the thief on their walk to school. They are shocked to see Mrs. Sharpe on a stretcher outside her home. She had broken her leg. She then gave the kids a letter to mail for her, a letter addressed to Ms. Hussey. They almost decided to open it and read it, but it was dropped on the ground and stepped on by a man with a foreign accent. He picks it up and quickly mails it. They visit Mrs. Sharpe in the hospital who believes the woman in Petra's dreams is trying to speak to her. They discuss Fort, Picasso, and pentominoes. Calder receives a call from Tommy. He and his mom are moving back to Hyde Park, and Frog has returned from a...