The Big Store (1941) is a Marx Brothers comedy film in which Groucho, Chico and Harpo cause havoc in a Department Store. Groucho plays detective Wolf J. Flywheel, a character name originating from the Marx-Perrin radio show Flywheel, Shyster, and Flywheel in the early 1930s.The Big Store was the last of five films the team made under contract to Metro-Goldwyn-Mayer and it was advertised as their final film.