My companion noiselessly closed the shutters, moved the lamp onto the table, and cast his eyes round the room. All was as we had seen it in the daytime. Then creeping up to me and making a trumpet of his hand, he whispered into my ear again so gently that it was all that I could do to distinguish the words:
‘The least sound would be fatal to our plans.’
Because God help you both if you wake Mrs. Hudson again.
From The Adventure of the Speckled Band, by Sir Arthur Conan Doyle