Literary adaptation
Works of literature have been adapted for film from the dawn of the industry. Some of the earliest examples come from the work of Georges Méliès, who pioneered many film techniques. In 1899, he released two adaptations — "Cinderella" based on the Brothers Grimm story of the same name and "King John", the first known film to be based on the works of Shakespeare. The 1900 film "Sherlock Holmes Baffled", directed by Arthur Marvin featured Arthur Conan Doyle's detective character Sherlock Holmes intruding upon a pseudo-supernatural burglary. The film, considered the first detective movie, ran for only 30 seconds and was originally intended to be shown in hand-cranked Mutoscope machines.
Adaptations of Sherlock Holmes
Throughout the early 1940s on American Radio, Basil Rathbone and Nigel Bruce performed as Holmes and Watson, respectively, in several series of canonical and original Sherlock Holmes stories on "The New Adventures of Sherlock Holmes" radio show. These broadcasts were loosely based on Doyle's cases. When Rathbone finally departed the role before the 1947 season, Tom Conway played Sherlock Holmes opposite Nigel Bruce for one season. After a change of networks, there were two more pairings: John Stanley as Holmes and Alfred Shirley as Watson in 1947–1948 and Stanley and "George Spelvin" in 1948–1949. Both Stanley and Conway emulated Rathbone when performing Holmes to aid in continuity for the audience.