What are you doing up this late at night? Anything you'd like to tell me?
Umm, no and why should it be any of your business?
There's the escaped convict, get him!
And there's the hound!
Sherlock feels that someone is following him and he tries to pursue a man in a coach, but loses him.
Sherlock has been told there is an escaped convict out in the moors and he is taking a night troll and he sees the butler shining a candle out the window and he accuses him of helping the escaped convict.
Sherlock and Watson have found the escaped convict and the killer hound. Watson and Sherlock are either going to kill the escaped convict or capture him.