She’s Regency London’s hottest matchmaker. He’s the ton‘s most difficult duke. When he challenges her to find him a wife, she’s determined to scour high society in search of his ideal bride. The only trouble is, he believes love is a fool’s errand and simply wants someone who will make a good duchess. Will she be able to change his ideas about marriage or will this be one client she won’t be able to please? Find out in Jennifer Haymore’s The Duke’s Rules of Engagement.