Which two plot elements in the film The Speckled Band differ from this excerpt from Sir Arthur Conan Doyle's story The Adventure of the Speckled Band?

Sherlock Holmes and Dr. Watson rise unusually early one morning to meet Helen Stoner, a young woman who fears that her life is being threatened by her stepfather, Sir Grimesby Roylott, a doctor who practiced in India and who was married to Helen’s mother there. Helen’s sister has died almost two years earlier, shortly before she was to be married. Helen had heard her sister’s dying words, "The speckled band!" but had been unable to understand their meaning. Now Helen, too, is engaged, and she has begun to hear strange noises and to observe strange activities around Stoke Moran, the estate where she and her stepfather.