"I shall do so. By some devilish and mysterious means you were aware, before the poor girl left her home on Friday night, that her doom was sealed. You could have prevented it, and you did not raise a hand to save her. This knowledge I have gained from Mr. Lemon, to whom, through you, the impending tragedy was known." "Then why did _he_ not prevent it?" "It was not in his power. He was not acquainted with the names of the murderer and his victim." "Was I?" "You must have been. I do not pretend to an understanding of the extraordinary power you exercise, but I am convinced that, in connection with you, there is a mystery which should be brought to light, and if I can be the agent to unmask you I am ready for the work. With all the earnestness of my soul, I swear it." A low laugh escaped Devlin's lips. "Were a commissioner of lunacy here," he said, "you would be in peril. This young girl you speak of, is she in any way connected with you?" "She was my friend; I knew her from childhood; she has sat at my table with her sister and parents, and I and mine have sat at theirs. Her family are plunged into the lowest depths of despair by the cruel, remorseless blow which has fallen upon them." "And you have taken upon yourself the task of an avenger. It is chivalrous, but is it entirely unselfish? I am always suspicious of mere words; there is ever behind them a secret motive, hidden by a dark curtain. I speak in metaphor, but you will seize my meaning, for you are a man of nerve and intelligence, utterly unlike our friend in the room below, whose nature is servile and abject, and who is not, as you are, given to heroics. Calm yourself. I am ready to discuss this matter with you, but in your present condition I should have the advantage of you. You are heated; I am cool and collected. You have some self-interest at heart; I have none. Your words are so wild that any person but myself hearing them would take you for a madman. For your own sake--not for mine, for the affair does not concern me--I advise moderation of language. I suppose you will scarcely believe that the man upon whom you have unceremoniously intruded, and against whom you launch accusations, the very extravagance of which renders them unworthy of serious consideration--you will scarcely believe that this man is simply a poor barber who has not a second coat to his back, nor a second pair of shoes to his feet. But it is a fact--a proof of the injustice of the world, ever blind to merit. For I am not only a barber, sir, I am a capable workman, as I will convince you. Pray do not move; a cooling essence and a brush skilfully used effect wonders on an over-heated head."