Ruan Bettancourt, the Duke of Cynssyr, intends to marry London's most beautiful debutante. A case of mistaken identity forces him to marry her sister, spinster Anne Sinclair. Before long, he's head-over-heels in love with his wife while Anne is determined to make the best of her unwanted marriage. Can the man society calls "Lord Ruin" convince Anne he's fallen in love in with her?