Margaret becomes obsessed with discovering the truth behind her son's disappearance, leading her to a person of interest. Hilary tries to keep up appearances while her marriage is falling apart. Mercy is caught up in an intense affair with a man whose trauma mirrors hers.
Set against the sensational backdrop of 'The Vertical City' of Hong Kong, explore the vibrant lives of a close-knit expatriate community: where affluence is celebrated, friendships are intense but knowingly temporary, and personal lives, passings and marriages are played out publicly - then retold with glee.