The Adventures Of Sherlock Holmes: Speckeled Band

Helen Stoner, comes to Holmes and Watson, as she freaked out because she is hearing some weird whistling noises in her sleep, the same noises that her twin sister, Julia, used to hear right before she died in mysterious circumstances, two years ago. Holmes and Watson, decide to help her out and visit her estate in the night, even ignoring her stepfather's warning not to get involved in the matter.