An epistolary novel about an American girl taking a road trip across Europe and an English gentleman who, having fallen in love with her, poses as a chauffeur and drives her around England, France, Spain, and Italy. Part of the reason the girl, Molly, has taken the trip is to escape from Jimmy Payne, a swaggering braggart who imagines he’s engaged to her. They cross paths (not accidentally) along the way and Jimmy comes to suspect that “Brown”, the chauffeur, is not who he claims to be — he thinks he’s murdered his master, the Hon. Jack Winston, and has assumed his identity. He alerts both Molly’s father and Jack’s mother and the four of them meet in Sicily where the secret comes out and Jimmy is much disappointed.