In the book Drums, Girls, and Dangerous Pie I predict that Steven's brother Jeffrey will unfortunately die.  I think that because he has cancer. He only has 50% chance of living. Also, cancer is a deadly disease which can grow rapidly.  He has already gone to Philadelphia for a week. Also, this kid is eight years old. Most people with cancer unfortunately die.   Also Cancer is hard to cure disease.  That is why I think Jeffery will unfortunately die of cancer.