The novella 1 "A Study of Blood Characters", published in 1887 "Beaton Christmas Yearbook"

2 "sign of four", published in 189 "lippincott Magazine"

3 "The Hound of the Baskerville", published in 191-192

4 "uncanny valley". At that time, Holmes had died in The Last Case, and at this time, Conan Doyle's friends told him the bizarre story. When he went to the field, he felt more and more that the horrible atmosphere was suitable for Holmes, but Holmes was "dead", so Conan Doyle said in his publication that this film was his early work. The driver who pulled Conan Doyle to the scene at that time was called Baskerville.