Sherlock Holmes
When a couple of scammers hold young Alice Faulkner against her will to discover the whereabouts of letters whose dissemination could cause a scandal affecting the royal family, Sherlock Holmes decides to take over the case. (Considered lost, a copy was found in 2014, in the vaults of the Cinémathèque Française.)
Starring William Gillette, Ernest Maupain, Marjorie Kay, Edward Fielding, Stewart Robbins, Hugh Thompson, Ludwig Kreiss, Mario Majeroni, William Postance, Chester Beery
It's a crime and drama movie, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of movie.
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Not found streaming from United Kingdom.