Playboy Sam Carson has it all. Success. Money. Women. But when an elderly woman riding in a carriage around Central Park asks him which Duke he is, it's unmistakable - he also has trouble on his hands. He accompanies the woman to her granddaughter's home to be sure she gets home safely, only to encounter the most exasperating woman he's ever met. Ally Giordano is as sensible as the day is long. So when her grandmother shows up on her doorstep with a 'Duke' in tow, spouting details from her favourite historical novel like it's reality, Ally is flummoxed. But when her grandmother demands that Ally marry this 'Duke' as he's her last chance at a suitable match, Ally knows it's time for meds. Finally when her grandmother's one last wish is to travel the country, with a fantasy of it being Regency England, Ally can't refuse the woman who means everything to her. The catch: Ally's grandmother refuses to go without Sam. But how can Ally ask this sinfully sexy playboy to accompany them when all she wants to do is rip his clothes off?