Granny Get Your Gun  Granny Get Your Gun is a 1940 comedy film directed by George Amy and written by Kenneth Gamet. The film stars May Robson, Harry Davenport, Margot Stevenson, Hardie Albright, Clem Bevans and Clay Clement. It is based primarily on supporting characters found in the 1937 Perry Mason novel "The Case of the Dangerous Dowager". The film was released by Warner Bros. on February 10, 1940. Leonard Maltin: "Cute comic mystery... Robson is a hoot as a rough-riding Nevadan who straps on her six-shooters and turns sleuth to clear her granddaughter of a trumped-up murder charge." The film made a profit of $14,000.