On the third evening he was more fortunate, for having worked at his law books until late at night, he went out for a brisk walk before retiring to rest. The night was cold, and there had been a slight fall of snow, so Lucian wrapped himself up well, lighted his pipe, and proceeded to take the air by tramping twice or thrice round the square. Overhead the sky was clear and frosty, with chill glittering stars and a wintry moon. A thin covering of snow lay on the pavement, and there was a white rime on the bare branches of the central trees. On coming to the house of Berwin, the barrister saw that the sitting-room was lighted up and the curtains undrawn, so that the window presented a square of illuminated blind. Even as he looked, two shadows darkened the white surface--the shadows of a man and a woman. Evidently they had come between the lamp and the window, and so, quite unknowingly, revealed their actions to the watcher. Curious to see the end of this shadow pantomime, Lucian stood still and looked intently at the window. The two figures seemed to be arguing, for their heads nodded violently and their arms waved constantly. They retreated out of the sphere of light, and again came into it, still continuing their furious gestures. Unexpectedly the male shadow seized the female by the throat and swung her like a feather to and fro. The struggling figures reeled out of the radiance and Lucian heard a faint cry. Thinking that something was wrong, he rushed up the steps and rang the bell violently. Almost before the sound died away the light in the room was extinguished, and he could see nothing more. Again and again he rang, but without attracting attention; so Lucian finally left the house and went in search of Blinders, the policeman, to narrate his experience. At the entrance of Geneva Square he ran against a man whom he recognised in the clear moonlight. To his surprise he beheld Mark Berwin. CHAPTER III AN UNSATISFACTORY EXPLANATION "Mr. Berwin!" cried Lucian, recognising the man. "Is it you?" "Who else should it be?" replied Berwin, bending forward to see who had jostled him. "Who else should it be, Mr. Denzil?" "But I thought--I thought," said the barrister, unable to conceal his surprise, "that is, I fancied you were indoors." "Your fancy was wrong, you see. I am not indoors." "Then who is in your house?" Berwin shrugged his shoulders. "No one, so far as I know." "You are mistaken, sir. There was a light in your room, and I saw the shadows of a man and a woman struggling together thrown on the blind." "People in my house!" said Berwin, laying a shaking hand on the arm of Lucian. "Impossible!" "I tell you it is so!" "Come, then, and we will look for them," said Berwin in a tremulous voice. "But they have gone by this time!" "Gone!"