This linked set of comic and sinister adventures is set in a London of fog, clubs and secrets. Prince Florizel of Bohemia, a gracious and adventurous ruler in disguise, and his loyal companion Colonel Geraldine wander the city at night looking for amusement.
Their curiosity leads them to a private society whose members meet for a deadly game of chance. The tale treats a grim subject with dark wit and a sense of melodrama, and it is more about intrigue, honour and danger than about despair. It is an early example of Stevenson's talent for playful, atmospheric storytelling.