The Adventures of Sherlock Holmes - The Adventure of the Speckled Band

"The Adventure of the Speckled Band" is one of 56 Sherlock Holmes short stories by Arthur Conan Doyle. Holmes and Watson encounter a young woman who feels mortally threatened by her stepfather. She tells of her twin sister's mysterious and untimely death two years earlier—and her dying words, "The speckled band!". What does it all mean? Holmes agrees to take the case.