Miss Eva Black spent her life concealing her mother's past as a courtesan. Now a spinster, her beauty hidden away under a dour disguise, Eva spends her days schooling courtesans to be suitable wives. But one vengeful duke does not appreciate Eva turning his mistress into a lady. He plans to seduce Eva into becoming what she detests: a courtesan. But he doesn't expect her to be a woman of such beauty and so many secrets.