Stevenson crea un equilibrio entre realismo y elementos sobrenaturales. ¿Cómo integra estos conceptos?

A major theme of Gothic novels tends to be the existence of powerful secrets, such as Jekyll's connection to Hyde. In addition, nearly every Gothic novel takes place in a strange, mysterious location, such as Dracula's castle, the Thornfield estate in Jane Eyre, or the foggy, dark, mysterious nighttime London of Dr. Jekyll and Mr. Hyde. Stevenson places great stress on the dark, dank streets of London in wonderfully descriptive language. For instance, while Poole and Utterson prepare to break down the door of Jekyll's study, Stevenson writes, "[t]he scud had banked over the moon, and it was now quite dark. The wind, which only broke in puffs and draughts into that deep well of building, tossed the light of the candle to and fro about their steps."