"But that is no concern of yours," she went on more calmly, and I could not but admit the justice of the rebuke. "You're seeking Marcia. In that I would help you, if I could, but I don't know where she is. As soon as I do know, I will summon Mr. Curtiss; I promise you that. Perhaps you will find her without my help. If you do, tell Mr. Curtiss to go to her and demand an explanation; it is due him, and she has my full permission to tell him everything. Then let him decide whether she shall be his wife. We will both bow to his decision." "But you've heard from her?" I persisted. "Only this," she answered, and thrust a crumpled piece of paper into my hand, then turned and left the room. I smoothed it out and read the message at a glance, noting that it was dated from New York:-- "I am safe. Do not worry. Will write. "Marcia." CHAPTER XIII Pursuit My work at Elizabeth was done. Whatever mystery this house contained, whatever the secrets of the Kingdons and the Lawrences, my business was not with them. I had only to return to New York and place this message in Burr Curtiss's hands. I would counsel him to wait until Marcia Lawrence chose to reveal herself--I was sure it would not be long. A few days' respite would be wise for both of them; they would be calmer, more self-controlled, better able to meet bravely and sensibly what must be the one crisis of their lives. But a great load was lifted from me. Mrs. Lawrence had assured me that the marriage was not impossible; loving each other as they did, I knew that nothing short of the impossible could stand between them. So they would win through, at last. Cheered by this thought, I left the house and made my way to the hotel. "When's the next train to New York?" I asked. "There's one on the Pennsylvania, sir, in ten minutes," said the clerk. "'Bus just leaving." I ran out and got aboard, and a moment later we were bumping over the uneven pavement. I took a final look up the shady street; it was the last time I should see it. What was going on, I wondered, in that big house among the trees? Had Miss Kingdon answered the imperative summons sent her? Had there already been an explanation, a revelation of the mystery? Had she confessed that it was indeed she who revealed the secret? Was Mrs. Lawrence right in thinking the letter from New York had no connection with it? The 'bus stopped abruptly, and I clambered down to the platform and got my ticket. It was still some minutes till train time, and while I waited, a train on the Jersey Central tracks stood puffing a moment, and then started on for Philadelphia. The little station was built in the triangle where the two lines crossed; trains were passing almost every minute, and I reflected how easy it would be for a person not familiar with the place to get confused and to take the wrong train. There came a growing rumble, a shrieking of brakes. A moment more and we were off.