(Part 2 of 3) Orson Welles (Professor Moriarty), Sir John Gielgud (Sherlock Holmes), and Sir Ralph Richardson (Dr. Watson) star in this radio show dramatization of Sir Arthur Conan Doyle's Sherlock Holmes detective story, The Final Problem. The program aired on December 21, 1954. There were 16 shows total in this radio series. Photo: A young Orson Welles making a radio broadcast.