, an Australian-born Irish theatre manager ran music halls and West End stages until World War I when he segued into film production. Beginning in 1919, Stoll opened a series of cinemas and purchased a disused aircraft factory to create the then-largest film studio in Britain. In 1920, Stoll purchased the rights to produce films based on Sherlock Holmes' tales from Sir Arthur Conan Doyle. Stoll embarked on the production of his first series of fifteen short films entitled The Adventures of Sherlock Holmes in 1921. The films were directed by Maurice Elvey and then 59-year-old actor Eille Norwood was chosen to portray Sherlock Holmes, with Hubert Willis cast as Dr Watson. Norwood was obsessed with portraying Holmes true to the written stories. He re-read all the stories published up to that time and even learned to play the violin. Norwood had a reputation as a very professional actor with an incredible ability with make-up and disguise. There is a story that when Elvey asked Norwood to do an impromptu screen test, Norwood excused himself to the dressing room and appeared a few minutes later "an entirely new person". Norwood took pains to maintain faithfulness to the original stories, something Conan Doyle was so impressed with he awarded the actor a gift of a dressing gown which the actor wore in many of the films. However, Conan Doyle was critical of the choice to set the stories in modern times. The initial series of fifteen shorts entitled The Adventures of Sherlock Holmes was so successful, that Stoll moved to film a feature-length adaptation of The Hound of the Baskervilles also in 1921. Unlike Adventures, The Hound of the Baskervilles was less faithful to the original story. While film critics such as The New York Times were less than enthused with the adaptation, Doyle enjoyed it claiming "On seeing him in The Hound of the Baskervilles I thought I had never seen anything more masterly." Critical success returned with the second installment of fifteen short films entitled The Further Adventures of Sherlock Holmes in 1922. Elvey was replaced as director by George Ridgwell. A final collection of fifteen shorts was released in 1923 entitled The Last Adventures of Sherlock Holmes. The series was successful enough to spawn one last feature-length film, The Sign of Four released later in 1923. The Sign of Four featured a return of Elvey to the helm and the replacement of Hubert Willis with Arthur Cullin as Watson. Elvey considered Willis too old to play a romantic interest for Mary Morstan. Cullin had earlier assayed the role in 1916's The Valley of Fear opposite H. A. Sainstbury's Holmes.
Sir Arthur Conan Doyle himself praised Norwood's performance in the role of his creation. Vincent Starrett stated that while the Stoll films were a little slow, their fidelity to the source material often surpassed later more elaborate adaptations. Bioscope claimed that "As popular attractions, The Adventures of Sherlock Holmes are, in our opinion, considerably the best things yet shown by Stoll."
