Build a movie plot around this: When did Holmes arrive? He never did arrive.
The answer to this question is:
The first of two of the Twentieth Century-Fox Rathbone/Bruce Sherlock Holmes movies opens with the 20th Century Fox logo and theme, followed by title and credits shown over a panning shot of the moors. That transitions to a note, "1889 In all England there is no district more dismal than that vast expanse of primitive wasteland, the moors of Dartmoor in Devonshire." We see Baskerville Hall, it is late evening and a man runs through the countryside back to the house. A hound bays, and Sir Charles (Ian MacLaren) running, clutches his chest and falls to the ground. A convict (Nigel De Brulier) witnesses the poor man's demise and decides to rob the body of its valuables but is scared away by a man calling out. Mrs. Barryman (Eily Malyon) opens the door, sees her master dead and screams. At the coroner's inquest, Barryman (John Carradine) provides testimony about finding his boss. He relays that he sought the assistance of Dr. Mortimer (Lionel Atwill) who was having dinner with the Stapletons. John Stapleton (Morton Lowry) and his sister, Beryl (Wendy Barrie) are also present at the inquest. The coroner (Lionel Pape) asks Dr. James Mortimer the cause of death. Mortimer replies, "Heart failure, sir." Before he can expand on his answer of what might be bothering Sir Charles, his wife, Jennifer (Beryl Mercer) signals to her husband not to answer. Mr. Frankland (Barlowe Borland) insists that Sir Charles was murdered. Since Dr. Mortimer is emphatic it was heart failure, the coroner's verdict is death by natural causes. Frankland is not satisfied. He stands and yells, "Call it what you like. Sir Charles was murdered. There's more than one person in this room, knows I speak the truth."In London, at 221B Baker Street, Dr. Watson (Nigel Bruce) reads a newspaper. He spots an article, "Sir Henry Baskerville arriving from Canada, Young Heir will assume title and estates, Death of the Late Sir Charles Baskerville still a mystery." Watson asks Holmes (Basil Rathbone) why he wants all the clippings about the Baskervilles. Holmes...