The Final Problem In the 1939 film series starring Basil Rathbone as Holmes and Nigel Bruce as Watson, a number of films borrow elements from "The Final Problem". Most noticeable of these elements is the methods of killing Moriarty off; in "The Adventures of Sherlock Holmes", "Sherlock Holmes and the Secret Weapon" and "The Woman in Green" Moriarty is seen in all three films falling a great height to his death. "The Woman in Green" contains a variation on the conversation between Holmes and Moriarty in Baker Street, as well as the idea of Moriarty manipulating Watson out of the way by hoaxing
Sherlock Holmes and the Secret Weapon of a Swiss scientist by their nemesis Professor Moriarty, to steal a new bomb sight and sell it to Nazi Germany. Sherlock Holmes and Dr. John Watson have to crack a secret code in order to save the country. The film is one of four films in the series which are in the public domain. Sherlock Holmes (Basil Rathbone) pretends to be a Nazi spy to aid scientist Dr. Franz Tobel (William Post Jr.) and his new invention, a bombsight, in escaping a Gestapo trap in Switzerland. Holmes and Franz fly to London, where Holmes places him under the protection