Ann Radcliffe, The Mysteries of Udolpho — Volume III, Chapter II
“ Every thing remained quiet; she had not heard even a foot-fall; and the solemnity of this silence, with the mysterious form she saw, subdued her spirits, so that she was moving from the casement, when, on a sudden, she observed the figure start away, and glide down the rampart, after which it was soon lost in the obscurity of night. Emily continued to gaze, for some time, on the way it had passed, and then retired within her chamber, musing on this strange circumstance, and scarcely doubting, that she had witnessed a supernatural appearance. ”
