The Case of the Unwelcome Owl

"So," said John, feeling out of his depth once again. "An owl." It was the same mild, politely curious tone of voice with which he had previously found himself uttering such things as: "So – three bags of frozen AB negative," and "So – a selection of human ears."

"Goodness, John, with deductive prowess like that you'll soon be putting me in the shade," Sherlock said tartly. "Can't sneak anything past you, can we?"