outline of the valance above me was within an inch of being parallel
with his waist. I still looked breathlessly. And steadily and
slowly--very slowly--I saw the figure, and the line of frame below the
figure, vanish, as the valance moved down before it.

I am, constitutionally, anything but timid. I have been on more than one
occasion in peril of my life, and have not lost my self-possession for
an instant; but when the conviction first settled on my mind that the
bed-top was really moving, was steadily and continuously sinking down
upon me, I looked up shuddering, helpless, panic-stricken, beneath the
hideous machinery for murder, which was advancing closer and closer to
suffocate me where I lay.

I looked up, motionless, speechless, breathless. The candle, fully
spent, went out; but the moonlight still brightened the room. Down and
down, without pausing and without sounding, came the bedtop, and still
my panic terror seemed to bind me faster and faster to the mattress on
which I lay--down and down it sank, till the dusty odour from the lining
of the canopy came stealing into my nostrils.

At that final moment the instinct of self-preservation startled me out
of my trance, and I moved at last. There was just room for me to roll
myself sideways off the bed. As I dropped noiselessly to the floor, the
edge of the murderous canopy touched me on the shoulder.

Without stopping to draw my breath, without wiping the cold sweat
from my face, I rose instantly on my knees to watch the bedtop. I was
literally spellbound by it. If I had heard footsteps behind me, I
could not have turned round; if a means of escape had been miraculously
provided for me, I could not have moved to take advantage of it. The
whole life in me was, at that moment, concentrated in my eyes.

It descended--the whole canopy, with the fringe round it, came
down--down--close down; so close that there was not room now to squeeze
my finger between the bedtop and the bed. I felt at the sides, and
discovered that what had appeared to me from beneath to be the ordinary
light canopy of a four-post bed was in reality a thick, broad mattress,
the substance of which was concealed by the valance and its fringe. I
looked up and saw the four posts rising hideously bare. In the middle
of the bedtop was a huge wooden screw that had evidently worked it down
through a hole in the ceiling, just as ordinary presses are worked down
on the substance selected for compressio