The one? Well that could be... anyone. "Who's 'the one'?" he asked him with quiet curiosity. "That was nice of him. To bring you a book." The one who brought him the book was dead? Or someone else? Had theodore jumped subjects again? It was so hard to tell.
"I can bring you a book next time, if you like?" Maybe a picture book would be most appropriate. But a book was a book, yes?