Ellery Queen's Penthouse Mystery is a 1941 American mystery film directed by James P. Hogan and written by Eric Taylor. It is based on the 1939 play The Three Scratches by Ellery Queen. The film stars Ralph Bellamy, Margaret Lindsay, Charley Grapewin, Anna May Wong, James Burke and Eduardo Ciannelli. The film was released on March 24, 1941, by Columbia Pictures.