Tapping his sources for The Cookcamp (1991) once again, Paulsen tells another evocative story about a small boy alone with his mother during WW II. It could be the same boy, perhaps a year later, who describes their long train journey to northern Minnesota to visit an aunt and uncle who live behind their country store. The boy is troubled by doubts: Before they left Chicago, he glimpsed a mean old neighbor, Mr. Henderson, dressed in a Santa suit. Is it still worth trying to be good if Mr. Henderson is Santa, or if Santa doesn't exist at all? Also, the boy's slightly older cousin Matthew—bedridden and known to be dying—is a subduing source of puzzlement: The boy's father might die in Europe, meaning that he would never come home—but Matthew is already home. What, then, can dying mean? Skillfully and unsentimentally, Paulsen depicts the adults' grief as they prepare for Matthew's last Christmas through the perceptions of a narrator who is so young that he can't really comprehend, but is already a thoughtful and caring individual. The boys' friendly interaction—Matthew contrives games they can share and they worry together about Santa's existence—ring especially true. In the end, a Santa in whom the boys can believe does turn up; it's up to the reader to judge whether he's Uncle Ben's doing, or Paulsen's. A holiday heartwarmer that will appeal to a wide audience. Illustrations not seen. (Fiction. 8-12)