Lady Rose Summer, the wayward Edwardian debutante who keeps getting mixed up in disreputable adventures, would swear she is not a jealous woman. After all, she knows her engagement to private detective Captain Harry Cathcart is only a ploy to keep her parents from shipping her off to India to find a husband. But then Harry's latest client, Dolores Duval - a vision of curves with a seductive French accent - starts appearing everywhere at his side...