The Strange Case of the End of Civilization as We Know It

[Watson is reading clues from a crossword puzzle to Holmes]

Dr. William Watson, M.D.:
1 Across. A simple source of citrus fruit, 1, 5, 4.

Arthur Sherlock Holmes:
A lemon tree, my dear Watson.

[Elsewhere in the hotel, Moriarty shoots Sam Spade]

Dr. William Watson, M.D.:
2 Down. Conservative pays ex-wife maintenance. 7, 5.

Arthur Sherlock Holmes:
Alimony...alimony Tory, my dear Watson.

Arthur Sherlock Holmes:
Never cease to astound me.

[Moriarty takes a sword to Hercule Poirot]

Dr. William Watson, M.D.:
2 Down. Southern California style. 1, 2, 8.

Arthur Sherlock Holmes:
A la Monterrey, my dear Watson.

Dr. William Watson, M.D.:
Really good, holmes.

[Moriarty shoots M]

Dr. William Watson, M.D.:
4 Down. Burglar's entrance

Arthur Sherlock Holmes:
Alarm entry, my dear Watson

Dr. William Watson, M.D.:
That's rather poor, isn't it, Holmes? Right. One to go. A cowardly fish with a sting in its tail.

Arthur Sherlock Holmes:
Yellow manta ray, my dear Watson

Dr. William Watson, M.D.:
Brilliant, Holmes

[Moriarty does in McCloud with an arrow]

Arthur Sherlock Holmes:
Get a crossword, Watson. There's several moments to lose.

Chief Commisioner Blocker:
You've... ah, no doubt read, Mr. Holmes...

Dr. William Watson, M.D.:
Good Lord.

Chief Commisioner Blocker:
...read in the newspapers...

Dr. William Watson, M.D.:
Great Scott.

Chief Commisioner Blocker:
...of certain mysterious incidents?

Arthur Sherlock Holmes:
The unexpected but accurate bisecting of the Belgian foreign minister, the Royal College of Needlework massacre, the strange affair of the seven boiled bishops, and the man-eating poodles of Lambeth Palace enigma?

Chief Commisioner Blocker:
No.

Dr. William Watson, M.D.:
Good Lord.

Arthur Sherlock Holmes:
Just as I thought.

Chief Commisioner Blocker:
No, I'm referring to the mysterious shooting of Dr. Gropinger.

Dr. William Watson, M.D.:
[Explaining the inadvertent demise of the Police Commissioner by stabbing] He's taken a turn for the worse, I'm afraid. He's terribly ill. In fact he's so desperately ill, he's dead.