Antony Ferrara, the co-legatee, was not slow to recognise that a damaging stroke had been played, but he knew Dr. Cairn too well to put up any protest. In his capacity of fashionable physician, the doctor frequently met Ferrara in society, for a man at once rich, handsome, and bearing a fine name, is not socially ostracised on the mere suspicion that he is a dangerous blackguard. Thus Antony Ferrara was courted by the smartest women in town and tolerated by the men. Dr. Cairn would always acknowledge him, and then turn his back upon the dark-eyed, adopted son of his dearest friend. There was that between the two of which the world knew nothing. Had the world known what Dr. Cairn knew respecting Antony Ferrara, then, despite his winning manner, his wealth and his station, every door in London, from those of Mayfair to that of the foulest den in Limehouse, would have been closed to him--closed, and barred with horror and loathing. A tremendous secret was locked up within the heart of Dr. Bruce Cairn. Sometimes we seem to be granted a glimpse of the guiding Hand that steers men's destinies; then, as comprehension is about to dawn, we lose again our temporal lucidity of vision. The following incident illustrates this. Sir Elwin Groves, of Harley Street, took Dr. Cairn aside at the club one evening. "I am passing a patient on to you, Cairn," he said; "Lord Lashmore." "Ah!" replied Cairn, thoughtfully. "I have never met him." "He has only quite recently returned to England--you may have heard?--and brought a South American Lady Lashmore with him." "I had heard that, yes." "Lord Lashmore is close upon fifty-five, and his wife--a passionate Southern type--is probably less than twenty. They are an odd couple. The lady has been doing some extensive entertaining at the town house." Groves stared hard at Dr. Cairn. "Your young friend, Antony Ferrara, is a regular visitor." "No doubt," said Cairn; "he goes everywhere. I don't know how long his funds will last." "I have wondered, too. His chambers are like a scene from the 'Arabian Nights.'" "How do you know?" inquired the other curiously. "Have you attended him?" "Yes," was the reply. "His Eastern servant 'phoned for me one night last week; and I found Ferrara lying unconscious in a room like a pasha's harem. He looked simply ghastly, but the man would give me no account of what had caused the attack. It looked to me like sheer nervous exhaustion. He gave me quite an anxious five minutes. Incidentally, the room was blazing hot, with a fire roaring right up the chimney, and it smelt like a Hindu temple." "Ah!" muttered Cairn, "between his mode of life and his peculiar studies he will probably crack up. He has a fragile constitution." "Who the deuce is he, Cairn?" pursued Sir Elwin. "You must know all the circumstances of his adoption; you were with the late Sir Michael in Egypt at the time. The fellow is a mystery to me; he repels, in some way. I was glad to get away from his rooms."