In the meantime Lydon had received reports from Grewgus, the first arriving a few days after he had left Paris. From these he learned that the detective and his colleague were keeping a close watch upon the man Edwards and Miss Glenthorne, to call her by her latest alias. They watched them from about eleven o’clock in the morning--the woman did not stir out till then--till late at night. The programme was much the same every day. In the morning Zillah met the man Edwards, and they walked about together in the outskirts of Paris. They steered clear of the well-known portions, as no doubt Calliard was pursuing his business there, and they might run across him at any moment. In the afternoon they usually took a car and drove out to Versailles or some other suburb. In the evening Zillah invariably met the opulent jeweller, Calliard, and they dined together at one of the numerous expensive restaurants that abound in the gay city. Monsieur Calliard was evidently a rich man and begrudged nothing in the pursuit of his pleasures. Then one day came a brief telegram from Grewgus: “The birds have flown, slipped away. All news when we meet. Leaving to-day. Be at my office to-morrow morning as early as you like.” On the face of it, it looked as if the detective had failed in his mission, that the two schemers had outwitted him, and stolen a march on him. CHAPTER THIRTEEN Lydon thought that Grewgus looked somewhat crestfallen when they met the following morning in the offices in Craven Street. He opened the conversation in a rather apologetic tone. “Well, Mr. Lydon, the primary object for which we went to Paris was the establishment of the fact that Zillah Mayhew was the same person as Elise Makris. But that fact we established on the first day we arrived there. I stayed on in order to find something more than that. I am sorry to tell you I have found nothing, except one little thing that makes the affair more mysterious.” “You say they contrived to give you the slip. How was that done when you were keeping such a close watch on them?” asked the young man in a tone that plainly showed his disappointment. Grewgus hastened to explain. “I am afraid I must plead guilty to a little want of foresight. After watching very carefully for three days, we became pretty sure that neither the woman nor her friend Edwards were what you would call early birds. They did not stir out before a fairly late hour in the morning.” Having, as they thought, established this fact, the two men did not begin their watch till a certain hour themselves. Had they not been so confident, it would have been easy to take it in turns to watch one of them, since, if one of them went out, it was for the purpose of ultimately meeting the other. As a fact, to carry out the thing thoroughly, a third, perhaps a fourth, man was wanted.