Read the excerpt from The Strange Case of Dr. Jekyll and Mr. Hyde. It was a fine dry night; frost in the air; the streets as clean as a ballroom floor; the lamps, unshaken by any wind, drawing a regular pattern of light and shadow. By ten o’clock, when the shops were closed the by-street was very solitary and, in spite of the low growl of London from all round, very silent. Which detail from the excerpt best establishes the gothic setting?