"The Third Circle" by Frank Norris is a novel set in the early 20th century that delves into the hidden aspects of San Francisco’s Chinatown. The narrative primarily focuses on the darker, secretive parts of Chinatown that are often overlooked, introducing characters like young Hillegas and Miss Ten Eyck, who embark on a seemingly innocuous visit only to find themselves embroiled in the mysteries and dangers of this subterranean world. At the start of the story, the setting unfolds in a quaint restaurant in Chinatown, where Hillegas and Ten Eyck find themselves captivated by the exotic ambiance. However, their night takes a sinister turn when they encounter a fortune-teller and decide to have a tattoo done, which marks a crucial moment linking them to the secrets of this hidden Chinatown. Subsequently, Ten Eyck mysteriously disappears, leaving Hillegas to grapple with the implications of her vanishing act. Through these events, the opening pages lay the groundwork for exploring themes of identity and the unspoken shadows that linger in urban environments. (This is an automatically generated summary.)