An unsteady footstep roused Lord Prelice from his momentary stupor, and he wheeled automatically to see a little man, masked, and wearing a black silk domino, swaying to and fro at the open dining-room door. But the sight of the two apparently dead men, and the presence of their possible murderer, seemed to sober the new-comer in a single moment. Before Prelice could spring forward, he gasped and fled. Almost immediately his voice, tense with terror, was heard shouting the news of his discovery to the revellers on the stairs. Prelice cursed under his moustache, and ran into the passage to close the outer door, which he now remembered he had foolishly left ajar. Possibly the little man, being intoxicated, had stumbled up the stairs on his way to the ball, and finding the door open, had so far mistaken his way as to stagger in. Prelice wondered if the stranger was Haken or Rover, both small of stature; but he recollected that he had never seen either drunk. Besides, drunk or sober, Rover or Haken would never mistake Shepworth's flat for the one overhead. At the outer door Prelice swiftly changed his mind. He saw that the murder of the red-headed man was similar in all respects to that of Sir Oliver Lanwin. Then Miss Chent had been given time to recover, and so had been accused of the crime, although she protested that she had been in a state of catalepsy, induced by the scented smoke. Shepworth likewise was insensible, and, judging from the odour in the dining-room, from the same cause. It would be better, decided the young man rapidly, that Shepworth should be seen by a score of witnesses thus insensible, for then it could be proved that so helpless a man could not have struck the blow. Thus, when a crowd of startled people came pouring down the staircase, and into the flat on the second floor, Prelice threw open the door widely, and admitted them with a hurried explanation. "There has been a terrible crime committed," he declared, leading the way to the dining-room. "I came here a few minutes ago to find Mr. Shepworth, the owner of the flat, insensible as you see, and this other man stone-dead. He has been stabbed." "Stabbed!" Several voices echoed the word, and one woman gave a faint scream. The passage was crowded to the very door of the dining-room, and as many as could were looking over one another's shoulders to view the sinister scene. And like a ball from one person to another was tossed in various tones the ominous word "Murder!" "Who stabbed the man?" asked a medium-sized masker in a blue domino, who had placed himself directly in front of the mob, blocking the doorway. He addressed Prelice, and his manner was offensively suspicious. "I do not know," disclaimed that young gentleman quietly, for it seemed absurd indeed that he should be suspected. "I came here to see Mr. Shepworth only ten minutes ago." "How did you enter?" The tone of the question was still offensive.