Tom finds Sal, Gram, and Gramps sitting in the Missouri River. At first, he brandishes a bowie knife at them and declares that the river is private property. But when a water moccasin bites Gram, the boy accompanies her to the hospital and sucks venom out of Gram’s bite on the way. It’s not until he gets word that Gram is okay that he leaves the hospital. Before he goes, he gives Sal his address and finally introduces himself by name. Sal writes to him after she returns to Bybanks, sharing that Gram passed away from a stroke.