“The Enola Holmes case hinged on Sherlock Holmes’ complicated copyright status. Most Holmes stories sit in the public domain, and stories like Enola Holmes — which reimagines Holmes (played by Henry Cavill) having a younger sister — can freely repurpose their elements. But 10 of Arthur Conan Doyle’s stories are still protected by copyright, and the Doyle estate argued that they depict a meaningfully different version of the character.” – The Verge