"Open that door," she said, turning upon me a look of angry defiance. "You are either a fool or a meddler. Open the door!"

I laid one hand somewhat heavily upon her shoulder, and led her back to the seat she had just vacated.

"Possibly I may be both fool and meddler," I replied, in a tone so stern that it seemed to arrest her attention, and impress her with the fact that I was neither trifling nor to be trifled with. "But I am something else, and I know more of you, my young lady, and of your past career, than you would care to have me know. Perhaps you may never have heard of Michael Carnes, the detective, but there are others who have made his acquaintance."

Now, all this was random firing, but I acted on the knowledge that nine-tenths of the women who are professional adventuresses have, in their past, something either criminal or disgraceful to conceal, and on the possibility that Miss Amy Holmes might not belong to the exceptional few.

The shot told. I saw it in the sudden blanching of her cheek, in the startled look that met mine for just an instant. If there were nothing else to conceal, I think she would have defied me and flouted at my efforts to extract information on the subject of the Groveland mystery.

But I had touched at a more vulnerable point. If I could now convince her that I knew her past career, the rest would be easy.

It was a delicate undertaking. I might say too much, or too little, but I must press the advantage I had gained. Her attention was secured. Her curiosity was aroused. There was a shade of anxiety on her face.

Drawing a chair opposite her, and seating myself therein, I fixed my eyes upon her face, and addressed her in a tone half stern, half confidential: