So far from my words succeeding in reaching the sympathetic side of her--if she had one--she glared at me, if it were possible, more malignantly than before.

"You hypocrite!" she hissed.

My captor placed his hand upon my shoulder. "Come," he said, in a tone which was unmistakably official. "It is no use staying here to bandy words. Downstairs, Mr. Southam, if you please, and mind, no tricks upon the way."

I told him that he need not apprehend anything in the nature of what he called tricks from me. We went downstairs, Mrs. Lascelles-Trevor close at our heels.

"Step into the coffee-room, Mr. Southam, if you please. I am going to send for a cab. Mrs. Barnes!" That lady appeared. "I have effected this man's capture, as I told you that I probably should do."

So she had known all along who he was, and in concealing the fact, in a sense, had betrayed me. And this was the meaning of her futile, eleventh-hour attempt at warning of the night before.

"Let me have a cab at once. And allow no one to enter this man's bedroom until I have had an opportunity of examining all that it contains. I shall hold you responsible."

I saw that Mrs. Barnes's head was nodding like a Chinese mandarin's, and that it was set in motion evidently by the agitated condition of her nerves. The detective perceived that it would be as well for him to repeat his instructions if he wished them to be acted on.

"Now then, Mrs. Barnes, pull yourself together! Let me have that cab."

As Mrs. Barnes moved aside, with the possible intention of taking steps to execute the officer's commands, I observed that some one was standing at her back. It was her husband. He stood just inside the hall door as if he had just come in, and was wondering what was taking place. He was as shabbily and as poorly dressed as he very well could have been. But there was something in his face and in his bearing which, for some reason which I will not stay to fathom, brought good hope into my heart.