Scout takes Boo—“Mr. Arthur”—down to the porch, and they sit in shadow listening to Atticus and Heck Tate argue. Heck insists on calling the death an accident, but Atticus, thinking that Jem killed Bob Ewell, doesn't want his son protected from the law. Heck corrects him—Ewell fell on his knife; Jem didn't kill him. the best i can do
