"Good company, too; but I should hate to turn him loose in my wine-cellars. I imagine that he's not a connoisseur, and will praise anything that's good to drink, unless it's water."

Merrihew roared.

"Well, here's your station, Dan. You go home like a good boy. Shall I see you to-morrow?"

"Eight-thirty in the park. Gallop off headache. Nothing like a horse for a headache. Good night."

Merrihew climbed the elevated stairs and vanished. Hillard arrived home tired and sleepy; but as he saw a letter on the stand in the hall, his drowsiness passed quickly. There was no other blue envelope like it. She now had his house address; she was interested enough to look it up. She did not follow his lead and write in Italian; she wrote in English—crisp English, too. Again there was neither beginning nor ending. But this was a letter; there was something here of the woman, something to read and read again.

I had told the maid to burn your letter. But she left it on the floor where I had thrown it, and I came across it this morning. It looked rather pathetic. So I am writing you against my better judgment. Yes, I know your name; I find that I am well acquainted with people you know. I am a woman who often surrenders to the impulse of the moment; I may or may not answer any future letter from you. You write very good Italian; but it will surprise you to learn that I detest all things that are Italian. Once I loved them well. Why should you wish to know me? Our ways are as divergent as the two poles. Happy because I sing? There are some things over which we can sing or laugh, but of which we can not speak without crying. Happy or unhappy, what can this matter to you? To you I shall always remain the Lady in the Fog. Are you rich, young, talented? I care not in the least. Perhaps it amuses me to add to your confusion. Find me? I think not. Seek me? Do so; I permit you to. And would you know me if you found me? Misguided energy!

Hillard put the letter away, extinguished the lights, and passed up to his room. She defied him to find her? This was a direct challenge. He would accept it. This time he would use no personal to tell her that a letter awaited her. She should make the inquiries herself. And from the mail-clerk he would obtain a description of the elusive Madame Angot. Next morning he rode in the park with Merrihew. Again he saw the veiled lady on the Sandford black. Out of normal curiosity he telephoned the stables and made inquiries. The reply was short. No one at the stables knew the lady, but she rode the horse on proper authority.

That night he wrote:

I shall keep on writing till you cease to reply. Let me be frank with you. I am bored; so are you. The pleasure you derive in keeping up this mystery engages you. You bid me to find you. I accept the challenge. You must understand at once that it is the mystery that interests me. It is the unknown that attracts me. I am mentally painting you in all sorts of radiant colors. You defy me to find you. There is nothing so reliable as the unexpected, nothing so desperately uncertain as a thing assured. I warn you that I shall lay all manner of traps, waylay your messengers, bribe them. I shall find out where you live. The rest will be simple.

She replied: