Sherlock: Did I get anything wrong?
John: Harry and me don’t get on, never have. Clara and Harry split up three months ago and they’re getting a divorce; and Harry is a drinker.
Sherlock: Spot on, then. I didn’t expect to be right about everything.
John: And Harry’s short for Harriet.
Sherlock: Harry’s your sister.
John: Look, what exactly am I supposed to be doing here?
John: No, seriously, what am I doing here?
Sherlock : There’s always something.