"The Catcher in the Rhine" is a short fantasy story by Harry Turtledove, published in The Chick is in the Mail, edited by Esther Friesner, Baen 2000 and reprinted in the omnibus Chicks Ahoy! (2010). It was reprinted in Atlantis and Other Places also in 2010.
The story is pastiche-cum-sequel of J. D. Salinger's novel The Catcher in the Rye. The narrator of the story, an American youth traveling through Europe to "find himself" makes a fateful stop in Isenstein, Germany, where he is transported through time, and is forced to rescue the Valkyrie Brunhild. While the German charcters of the story misinterpret his name as "Hagen Kriemheld", the narrator's correct name is never stated explicitly. Implicitly, "Kriemheld" is Holden Caulfield, the protagonist of Salinger's work.
In his foreword to the story when published in Atlantis and Other Places Turtledove states that the story originated from his daughter Rachel having misstated the name of Salinger's novel as a reference to the Rhine River. Her father immediately realized that this would be a good title for a story and set out to write a story fitting it. After selling the story he gave Rachel her rightful share of the money.