The Hound of the Baskervilles Chapter 4 - Sir Henry Baskerville

In which Dr. Mortimer introduces Sir Henry Baskerville to Sherlock Holmes, bringing with him a mysterious letter composed from newspaper clippings warning Sir Henry to stay away from the moor, and Holmes swiftly deduces details about the letter’s origin and its sender’s motive. A tense pursuit of a bearded cabman trailing Sir Henry unfolds, followed by a carefully planned investigatory scheme to discover more about the secretive messenger and the unfolding enigma.