Sherlock Holmes and the Secret Weapon the two other than the code. It is implied that the events of "The Dancing Men" are canon with the events of the film, as Watson is reminded of "a case [they] had some years ago". Lionel Atwill appeared previously in the film "The Hound of the Baskervilles" (1939) as Dr Mortimer. Sherlock Holmes and the Secret Weapon Sherlock Holmes and the Secret Weapon (1942) is the fourth in the Basil Rathbone/Nigel Bruce series of 14 Sherlock Holmes films which updated the characters created by Sir Arthur Conan Doyle to the then present day. The film is credited as an
Young Sherlock Holmes his guide. Of the creation of the film, Columbus stated: The cast includes actors with previous associations to Sherlock Holmes. Nigel Stock, who played Professor Waxflatter, portrayed Dr. Watson alongside both Douglas Wilmer and Peter Cushing in the BBC series of the 1960s. Patrick Newell, who played Bentley Bobster, played both PC Benson in 1965's "A Study in Terror" as well as Inspector Lestrade in 1979's "Sherlock Holmes and Doctor Watson". The movie explains where Holmes gains the attire popularly associated with him. His pipe is shown as being a Christmas present from Watson, the deerstalker hat originally belonged to