[Lestrade brings Holmes, handcuffed, before the Home Secretary, Lord Coward]
Inspector Lestrade: Excuse me, my lord. I know it's unorthodox, but Mr. Holmes here has been making some serious accusations about you...
[Lestrade lifts his lapel, showing a membership pin from the Temple of the Four Orders]
Inspector Lestrade: ...and the Order, sir.
Lord Coward: I see.
Sherlock Holmes: Well, at least that solves the great mystery of how you became Inspector.
[Lestrade turns and punches Holmes in the stomach]
Inspector Lestrade: Begging your pardon, my lord, but I've been wanting to do that for a long time.