The events leading up to and beyond this story were described in "Sherlock Holmes and the Railway Maniac" (1994, ), by Barrie Roberts. The end of Nicholas Meyer's 1993 novel "The Canary Trainer" ties into "His Last Bow", with Edward Grey and H. H. Asquith approaching Holmes to request he come out of retirement to investigate a man named Von Bork. "Ten Years Beyond Baker Street" by Cay Van Ash is set during Holmes's undercover search for Von Bork; it tells how he divides his time between his counter-espionage task and a search for Sir Denis Nayland Smith, believed to have been kidnapped by Fu Manchu; thus, Van Ash combines the worlds created by Conan Doyle and Sax Rohmer.