"Suppose you tell me what happened the day your father left, and how he went away. Tell me the little things too. They may be straws that will point in a certain direction."

"In the first place," she began, "we live on Monmouth Avenue. There are just the two of us, and the servants: a cook, two housemaids, a laundress, a butler and a chauffeur. My father spends much of his time at the capital, and in the last two years, since my old governess went back to Germany, at those times I usually go to mother's sisters at Bellwood—Miss Letitia and Miss Jane Maitland."

I nodded: I knew the Maitland ladies well. I had drawn four different wills for Miss Letitia in the last year.

"My father went away on the tenth of May. You say to tell you all about his going, but there is nothing to tell. We have a machine, but it was being repaired. Father got up from breakfast, picked up his hat and walked out of the house. He was irritated at a letter he had read at the table—"

"Could you find that letter?" I asked quickly.

"He took it with him. I knew he was disturbed, for he did not even say he was going. He took a car, and I thought he was on his way to his office. He did not come home that night and I went to the office the next morning. The stenographer said he had not been there. He is not at Plattsburg, because they have been trying to call him from there on the long distance telephone every day."

In spite of her candid face I was sure she was holding something back.

"Why don't you tell me everything?" I asked. "You may be keeping back the one essential point."

She flushed. Then she opened her pocket-book and gave me a slip of rough paper. On it, in careless figures, was the number "eleven twenty-two." That was all.

"I was afraid you would think it silly," she said. "It was such a meaningless thing. You see, the second night after father left, I was nervous and could not sleep. I expected him home at any time and I kept listening for his step down-stairs. About three o'clock I was sure I heard some one in the room below mine—there was a creaking as if the person were walking carefully. I felt relieved, for I thought he had come back. But I did not hear the door into his bedroom close, and I got more and more wakeful. Finally I got up and slipped along the hall to his room. The door was open a few inches and I reached in and switched on the electric lights. I had a queer feeling before I turned on the light that there was some one standing close to me, but the room was empty, and the hall, too."