With regard to the young woman, the waiter knew nothing about her. He fancied he recognized her as having been in the restaurant before during his period of service, but he could not say with whom. This was certainly the first time he had seen Monsieur Calliard in her company. From the restaurant, where they quickly got through their dinner, Simmons followed them to a music-hall, where he had left them when he came to make his report. “Nobody joined them in the music-hall, no Englishman who might be the man Edwards?” queried Grewgus when his colleague had finished his recital. “No, so far, Edwards has not appeared upon the scene,” was the answer. The detective looked at his client. “Looks like a case of blackmail, or perhaps robbery and blackmail,” was his comment. “Anyway the old game.” “I didn’t know whether you would like to go and have a look at them yourself?” hazarded Simmons. But Grewgus thought not. He would wait till to-morrow to get on the track of the man Edwards, that is, if he were taking an active part in the affair and still in Paris. CHAPTER TEN After breakfast the next morning, Grewgus inquired if Lydon had any intention of making a long stay in Paris. The young man replied in the negative. His business claimed him, his sweetheart claimed him, although he did not communicate the latter item to the detective. He had, up to the present, said nothing about her, or her relationship to Stormont. Naturally, he shrank from doing so. “I take it, if I stayed, I could be of little use to you in your proceedings, Mr. Grewgus?” he queried. The reply was polite, but quite emphatic. “Well, Mr. Lydon, I think not. If I detailed you off on the watching business, you might find it a very difficult job. Shadowing people is an art--of course Simmons and I are quite used to it.” “I am sure I understand. If I attempted to follow Miss Mayhew about, she would soon spot it. You do it in some mysterious way, so that while observing, you contrive to escape observation.” Grewgus was pleased to find his client took such a sensible view of the situation. He bestowed on him a cordial smile. “Everybody to his job, Mr. Lydon. I may say to you that, speaking from a professional point of view, this promises to be an exceedingly interesting case, more especially when we succeed in getting on to the track of the man Edwards who is no doubt about. I don’t fancy the young woman is doing it all off her own bat.” There was a certain air of satisfaction about Grewgus as he spoke which convinced his client he was engaged in a business after his own heart. There had been aroused in him those sleuth-like instincts, lacking which no man makes a good hunter of criminals. Grewgus was away all the morning, and Lydon took advantage of his absence to stroll about and renew his rather slight acquaintance with the beautiful city. They met for _déjeuner_ at the same place where they had dined the previous evening.