Dr. John Watson: [Holmes is firing a gun in the house] Mrs Hudson.
Mrs. Hudson: I won't go in there by myself, not while he's got a gun in his hand!
Dr. John Watson: You don't have to go in there at all.
Mrs. Hudson: What will I do when you leave, doctor? He'll have the whole house down!
Dr. John Watson: He just needs another case, that's all.