Watson discovers a stick left by their visitor from the night before. Watson notices the letters 'CCH' on the stick. Then Doctor J. Mortimer comes to collect his stick and asks for Sherlock and Watsons help.
Doctor Mortimer starts to tell Sherlock and Watson the story... A long time ago, Hugo Baskerville kidnapped a neighbours daughter and locked her in the attic
Luckily, the girl managed to escape but she was followed by Hugo whilst his drunken pals trailed along behind them.
When Hugo's pals caught up with them, they saw a horrible sight the girls was lying dead on the floor and there was a gigantic dog from hell gnawing out of Hugo's neck.
Doctor Mortimer finishes telling the story . Sherlock pauses to think about what has happened.
Doctor Mortimer then describes that after the recent, mysterious death of Sir Charles Baskerville (a descendant of the wicked Hugo), paw-prints of a huge dog were found near his body outside the Mansion