The Gray Madam

WAS it a specter?
For days I could not answer this question. I am no believer in spiritual manifestations, yet—But let me tell my story.
I was lodging with my wife on the first floor of a house in Twenty-seventh street. I had taken the apartments for three months, and we had already lived in them two and found them sufficiently comfortable. The back room we used as a bedroom, and while it communicated with the hall, we invariably made use of the front parlor-door to go in and out of. Two great leaves of old mahogany connected the two rooms, and as we received but few friends, these doors usually stood half open.
One morning, my wife being ill, I left her lying in bed and stepped into the parlor preparatory to going out for breakfast. It was late—nine o'clock, probably—and I was hastening to leave, when I heard a sound behind me—or did I merely feel a presence?—and, turning, saw a strange and totally unknown woman coming toward me from my wife's room.
As I had just left that room, and as there was no way of getting into it except through a door we always kept locked, I was so overpowered by my astonishment that I never thought of speaking or moving until she had passed me. Then I found voice, and calling out Madam! endeavored to stop her.
But the madam, if madam she was, passed on as quietly, as mechanically even, as if I had not raised my voice, and, before I could grasp the fact that she was melting from before me, flitted through the hall to the front door and so out, leaving behind on the palm of my hand the feel of her wool dress, which I had just managed to touch.
Not understanding her or myself or the strange thrill awakened by this contact, I tore open the front door and looked out, expecting, of course, to see her on the steps or on the sidewalk in front. But there was no one of her appearance visible, and I came back questioning whether I was the victim of a hallucination or just an everyday fool. To satisfy myself on this important question I looked about for the hall-boy, with the intention of asking him if he had seen any such person go out, but that young and inconsequent scamp was missing from his post as usual, and there was no one within sight to appeal to.