Full Cast & Crew
Cast(in credits order) verified as complete
...Sherlock Holmes
...Dr. Watson
...Mrs. Hudson
...Miss Beryl Stapleton
...Sir Henry Baskerville
...Laura Lyons
...Mrs. Barrymore
...John Barrymore
...inspector Lestrade
...Mr. Frankland
...Dr. James Mortimer
...Jack Stapleton/Hugo Baskerville
...postal director