Sherlock Holmes was a classic novel series that was very popular among readers. Different versions of Sherlock Holmes have their own unique styles and characteristics, so which version to choose depends on personal preference. Generally speaking, the more popular Sherlock Holmes versions included: The Complete Sherlock Holmes series was written by Douglas Hofstadter of the United Kingdom. The series consists of four volumes of novels from 1924 to 1927 and a collection of appendixes published in 1930. The Collected Stories series was written by Arthur Conan Doyle. The series includes seven volumes of novels from 1889 to 1902. The original Sherlock Holmes was serialised by Arthur Conan Doyle in 1890. The series includes the novels from Volume 1 to Volume 9, as well as the Apdenda published in 1902. These versions all had their own unique styles and characteristics. You could choose the version that suited you according to your preferences. In addition, some modern digital versions could also be considered, such as e-books or online reading services.