(There is a knock at the door)
Holmes: Yes? (Mrs. Hudson appears)
Holmes: (peremptory) My eggs were hard boiled.
Mrs. Hudson: (glaring at him) There's a Mr. Mason to see you, sir.
Holmes: Thank you, Mrs. Hudson. Show him in.
Holmes: There's nothing we can do until Lady Beatrice takes her drive again tomorrow.
Watson: (glaring) You still haven't explained why I risked my life this afternoon.
Holmes: To test a theory.
Watson: (snappish) You must be very disappointed I was almost killed instead!!
Holmes: (smug) On the contrary, I think my little experiment was quite successful.
Watson: I fail to see how.
Holmes: The dog, Watson - the dog.... Did that suggest nothing to you?