lowly changed his place—passed, looking at me hard all the while, to the opposite corner of the platform. Yes, I had the sharpest sense that during this transit he never took his eyes from me, and I can see at this moment the way his hand, as he went, passed from one of the crenelations to the next. He stopped at the other corner, but less long, and even as he turned away still markedly fixed me. He turned away; that was all I knew.

IV

It was not that I didn't wait, on this occasion, for more, for I was rooted as deeply as I was shaken. Was there a "secret" at Bly—a mystery of Udolpho or an insane, an unmentionable relative kept in unsuspected confinement? I can't say how long I turned it over, or how long, in a confusion of curiosity and dread, I remained where I had had my collision; I only recall that when I re-entered the house darkness had quite closed in. Agitation, in the interval, certainly had held me and driven me, for I must, in circling about the place, have walked three miles; but I was to be, later on, so much more overwhelmed that this mere dawn of alarm was a comparatively human chill. The most singular part of it, in fact—singular as the rest had been—was the part I became, in the hall, aware of in meeting Mrs. Grose. This picture comes back to me in the general train—the impression, as I received it on my return, of the wide white panelled space, bright in the lamplight and with its portraits and red carpet, and of the good surprised look of my friend, which immediately told me she had missed me. It came to me straightway, under her contact, that, with plain heartiness, mere relieved anxiety at my appearance, she knew nothing whatever that could bear upon the incident I had there ready for her. I had not suspected in advance that her comfortable face would pull me up,