Holmes first appeared in Conan Doyle's A Study in Scarlet,

Fictitious detective.

Basil Rathbone did play Sherlock Holmes in the movie "Sherlock Holmes Faces Death" which is about the Musgrave Manor. This intriguing mystery is based upon Sir Author Conan Doyle's "The Musgrave Ritual".

Dr. John H. Watson was modeled after Sherlock Holmes' assistant. Dr. Watson serves as the companion and chronicler of Sherlock Holmes' detective adventures in Arthur Conan Doyle's stories.

True