“What are you doing in Paris now?” Monty presently demanded. It occurred to him that it was odd that Denby, too, should be in the city now. “Writing a book on the Race Courses of the World,” he said, smiling. “I am now in the midst of Longchamps.” Monty looked at him doubtfully. He had never known that his friend had any literary aspirations, but he did remember him as one who, if he did not choose to tell, would invent airy fairy fancies to deceive. “I don’t believe it,” he said. “You are quite right,” Denby admitted. “You’ve got the key to the mystery. I’ll confess that I have been engaged to guard Mona Lisa. Suspicious looking tourists such as you engage my special attention. Don’t get offended, Monty,” he added, “I’m just wandering through the city on my way to England and that’s the truth, simple as it may seem. I was desolate and your pleasing countenance as you bought a franc’s worth of north wind was good to see. I wondered if you’d remember me.” “Remember you!” Monty snorted. “Am I the kind to forget a man who saved my life?” “Who did that?” Denby inquired. “Why, you did,” he returned, “You pulled me out of the Nashua river at school!” The other man laughed. “Why, it wasn’t five feet deep there.” “I can drown anywhere,” Monty returned firmly. “You saved my life and I’ve never had the opportunity to do anything in return.” “The time will come,” Denby said lightly. “You’ll get a mysterious message sometime and it will be up to you to rescue me from dreadful danger.” “I’d like to,” the other retorted, “but I’m not sure I’m cut out for that rescue business.” “Have you ever been--” Denby hesitated. “Have you ever been in any sort of danger?” “Yes,” Monty replied promptly, “but you pulled me out.” “Please don’t go about repeating it,” Denby entreated, “I have enemies enough without being blamed for pulling you out of the Nashua river.” Monty looked at him in astonishment. Here was the most popular boy in Groton School complaining of enemies. Monty felt a thrill that had something of enjoyment in it. His own upbringing had been so free from any danger and his parents had safeguarded him from so much trouble that he had found life insipid at times. Yet here was a man talking of enemies. It was fascinating. “Do you mean it?” he demanded. “Why not?” said Denby, rolling himself a cigarette. “You hadn’t any at school,” Monty insisted. “That was a dozen years ago nearly,” Denby insisted. “Since then--” He paused. “My career wouldn’t interest you, my financial expert, but I am safe in saying I have accumulated a number of persons who do not wish me well.” “You must certainly meet Alice,” Monty asserted. “She’s like you. She often says I’m the only really uninteresting person she’s fond of.” Denby assured himself that Alice would not interest him in the slightest degree and made haste to change the subject, but Monty held on to his chosen course. “We’ll all dine together to-morrow night,” he cried. “I’m afraid I’m too busy.”