Lady Charlotte Carpenter is abducted by thugs and held in an inn in retribution for her brother-in-law putting an evil brothel owner out of business. She almost mnanages her own escape, but is helped by a dashing gentleman and unfortunately seen with him by an inveterate gossip. i.e. she's been 'compromised' according to the customs of the day, by Constantine, marquis of Kenilworth. Con agrees that the only solution is marriage, but Charlotte isn't sure. He keeps a mistress for goodness sake and Charlotte is deeply into campaigning on behalf of sex-workers (or unfortunates as she might call them). Can she change Con's view of the world where virtue is a negotiable commodity, and can the Worthingtons finally put an end to the evil 'madame' who has appeared as the villain in a couple of books in the series?