November though it was the night was fine and clear, and there was a half-moon in the heavens; also there was rather more than a suspicion of frost in the air, and the stars, accordingly, wore a more brilliant appearance. To one who loved night strolling, as Viner did, this was indeed an ideal night for the time of year; and on this occasion, therefore, he went further than usual going along Bayswater Road as far as Notting Hill Gate, and thence returning through the various streets and terraces which lay between Pembridge Gardens and Markendale Square. And while he strolled along, smoking his pipe, watching the twinkling lights of passing vehicles and enjoying the touch of frost, he was thinking, in a half-cynical, half-amused way, of his Aunt Bethia's taste for the sensational fiction and of her evidently sincere conviction that there were much stranger things in real life than could be found between the covers of any novel. "Those were certainly two very odd instances which she gave me," he mused, "those of the prosperous banker and the pretty bride. In the first, how on earth did the man contrive to get away unobserved from a town in which, presumably, every soul knew him? Why did he go? Did he go? Is his body lying at the bottom of some hole by some roadside? Was he murdered in broad daylight on a public road? Did he lose his reason or his memory, and wander away and away? I think, as my aunt sagely remarked, that nobody is ever going to find anything about that affair! Then my Lady Marshflower--there's a fine mystery! Who was the man? What did she know about him? Where had they met? Had they ever met? Why did he shoot her? How on earth did he contrive to disappear without leaving some trace? How--" At this point Viner's musings and questionings were suddenly and rudely interrupted. Unconsciously he had walked back close to his own Square, but on the opposite side to that by which he had left it, approaching it by one of the numerous long terraces which run out of the main road in the Westbourne Grove district--when his musings were rudely interrupted. Between this terrace and Markendale Square was a narrow passage, little frequented save by residents, or by such folk familiar enough with the neighbourhood to know that it afforded a shortcut. Viner was about to turn into this passage, a dark affair set between high walls, when a young man darted hurriedly out of it, half collided with him, uttered a hasty word of apology, ran across the road and disappeared round the nearest corner. But just there stood a street-lamp, and in its glare Viner caught sight of the hurrying young man's face. And when the retreating footsteps had grown faint, Viner still stood staring in the direction in which they had gone. "That's strange!" he muttered. "I've seen that chap somewhere--I know him. Now, who is he? And what made him in such a deuce of a hurry?"