The voice came with a startling suddenness. It was an exceedingly clear, melodious voice, yet with a steely ring in it. The two friends wheeled round sharply to find themselves face to face with an exceedingly tall individual, whose length was almost grotesquely added to by the amazing slimness of his figure. In that respect he was not at all unlike the type of human skeleton which one generally expects to find in a travelling circus, or some show of that kind. The man, moreover, was dressed in deep black, which added to his solemnity. He had an exceedingly long, melancholy face, on both sides of which hung a mass of oily-looking black hair; his nose, too, was elongated and thin, and a long drooping moustache concealed his mouth. On the whole his appearance was redeemed from the grotesque by an extraordinary pair of black eyes, which were round and large as those of a Persian cat. Despite the man's exceeding thinness, he conveyed a certain suggestion of strength. At that moment he had a handkerchief between his fingers, and Gurdon could see that his wrists were supple and pliable as if they had been made of india rubber. Gurdon had heard that sort of hands before described as conjurer's hands. As he looked at them he half expected to see the handkerchief disappear and an orange or apple or something of that kind take its place. Then the stranger coolly walked across the hall and turned up another of the lights. He seemed to be perfectly at home, and conveyed a curious impression to the visitors that he expected to find them there. "I beg to remind you that you have not yet answered my question," he said. "What are you doing here?" "Let me answer your question with another," Venner said. "Who are you, and what may you be doing here?" The man smiled in a peculiar fashion. His big black eyes seemed to radiate sparks; they were luminous and full of vivid fury, though, at the same time, the long horse-like face never for a moment lost its look of profound dejection. They might have been eyes gleaming behind a dull, painted mask. "We will come to that presently," he said. "For the moment the mention of my name must content you. It is just possible that you might have heard the name of Felix Zary." Venner and Gurdon fairly started. The name of Felix Zary was familiar to them, but only during the last three-quarters of an hour. In fact, that was the name of the man as to whose whereabouts Fenwick had been so anxious to hear. Here was another element in the mystery, which, up to this moment, had not advanced very far towards solution. "I have heard the name before," Venner said, "but only quite recently--within the last hour, in fact."