A Scandal in Bohemia
The Langham Hotel on Regent Street is mentioned in several of Arthur Conan Doyle's Sherlock Holmes stories, including "The Sign of Four", "A Scandal in Bohemia" and "The Disappearance of Lady Frances Carfax". In "The Hound of the Baskervilles" (chapter 4), Holmes and Watson attempt to follow Stapleton down Regent Street.