Early in the film, Clive Candy tells Col. Betteridge that he has been speaking with Arthur Conan Doyle, author of the Sherlock Holmes stories. Betteridge, an avid fan, turns and quotes to his subordinate, Major Plumley: "Lovely evening, my dear Watson..." Plumley is played by Ian Fleming, who earlier portrayed Dr. Watson in Sherlock Holmes' Fatal Hour (1931), Sherlock Holmes and the Missing Rembrandt (1932), The Triumph of Sherlock Holmes (1935), and Murder at the Baskervilles (1937). His Sherlock Holmes, Arthur Wontner, also appears in a small role later in the film.