This document provides an analysis of the first chapter of Robert Louis Stevenson's novella "Strange Case of Dr. Jekyll and Mr. Hyde". It examines the descriptions of the main characters, setting, and themes of duality introduced. Utterson is depicted as a cold and emotionless man yet also likable. Enfield describes witnessing Hyde's disturbing behavior. The neighborhood and Jekyll's house suggest respectability but also hint at something sinister hidden beneath the surface, foreshadowing the theme of dual personalities.