How I expect Sherlock and John to escape the pool:
sarahtodannyboy: Mycroft saw the entry on Sherlock’s website. He saved them. End of story.
Arthur: master of deception
Douglas: Answer this question with a lie. What's your name?
Douglas: Arthnoldmanercatsirman... That's an unusual name. Tell me, is it made up?
Arthur: Yes, it is. Augh!