[Mrs. Hudson starts to clear space for the tea tray]
Sherlock Holmes: Don't touch. Everything is in its proper place... as per usual, Nanny.
[on her way out, Mrs. Hudson notices the dog laying on the floor]
Mrs. Hudson: Oh, he's killed the dog. Again.
Dr. John Watson: [irritated] What have you done to Gladstone now?
Sherlock Holmes: I was simply testing a new anesthetic. He doesn't mind.