The illegitimate and impoverished son of a dressmaker and a nobleman, Hyacinth Robinson has grown up with a strong sense of beauty that heightens his acute sympathy for the inequalities that surround him. Drawn into a secret circle of radical politics he makes a rash vow to commit a violent act of terrorism. But when the Princess Casamassima - beautiful, clever and bored - takes him up and introduces him to her own world of wealth and refinement,...