Margaret grows obsessed with solving her son's disappearance, leading to a shady individual. Hilary's marriage crumbles behind her public facade. Mercy has an intense affair with a man who shares her trauma.
Confined spaces escalate physical and emotional tensions between characters. A revelation in Gus's case prompts Margaret and Clarke's mainland trip. Hilary's mother visits from Los Angeles as Mercy makes a shocking find.
Margaret and her family prepare to return to the United States. Hilary travels home to Los Angeles to visit her ailing father. Mercy's mother visits her in Hong Kong for the first time.
