I had gone methodically to work in my strange researches, commencing at the door, and taking them one by one from the floor upwards, as far as I could reach. The advancement I made was not great; in fact, I was purposely slow, and took a considerable time over the examination of each one, because I wanted my task to last as long as possible.
Of those upon the sides of the cell I had formed a fairly distinct mental picture, and one day while engaged upon the wall opposite the door groping along as usual, my hand passed over a circular indentation cut deeply in the stone, which I judged to be about six inches in circumference. It was on a level with my head, and by the first touch I distinguished it was entirely different from the others, both in form, size, and general character.
Interested in this discovery, I proceeded to make a minute investigation with the tips of the fingers of both hands.
There were two circles, the one inside the other, about an inch apart, and I felt some writing in the intervening space. Round the circle I ran my fingers; the inscription was not profuse, only nine ill-formed letters.
“The name of some prisoner, perhaps,” I said to myself, as I carefully passed my finger over each letter, and tried to picture it upon my mind.
The first was of so strange a form that I could make nothing out of it, so passed on to the next. This seemed like a small thin line, crooked half-way down; the next was straight, like a figure one, and the next very similar, and so on, until I came to the one I had examined first.
Disappointed because I could not decipher a single character of what seemed hieroglyphics, I passed my hand over the whole in an endeavour to gain a general impression of it, when I found the centre of the circle was occupied by some large solid device.
I felt again. It bore some resemblance to the letter T inverted, and then momentarily, there flashed across my mind the thought that I had somewhere seen an emblem of similar appearance.
Eagerly I ran my hands over it, carefully fingering the centre, and trying to form a clearer idea of what it was like, when I suddenly recollected where I had met its exact counterpart.
“Yes, there is no mistake,” I said in an awed whisper, once more fingering it in breathless excitement.
“The characters must be the same; the centre is the same; it differs in no particular. It is the Seal!”
I stood almost terrified at the unearthly sound of my own words.
Here, in this foul prison, amid all these gruesome surroundings, I had made a strange discovery!
I had deciphered an exact reproduction of the curious seal found upon the body of the woman who had been so mysteriously murdered on that eventful night in Bedford Place – the fatal emblem over which the police of Europe and America had been so puzzled.
The disclosure brought vividly to my mind recollections of the murder which, by rare chance, I detected, and I asked myself whether Fate had decreed that a sketch of the seal should be graven upon the wall of my dungeon.
I am neither a visionary, nor am I superstitious, yet it is probable that my gloomy thoughts, combined with my solitary imprisonment, the lack of exercise, and the horrors of my cell, had produced a slight attack of fever; for while I was musing it seemed as if the mystic symbols assumed divers grotesque shapes, the outlines of which glowed like fire, and that by my side were hideous grinning demons, who assumed a threatening attitude towards me.
My breathing became difficult, my head swam, and I sank backward upon the stone seat.
I may have been insensible, or perhaps only sleeping soundly, when there came a jingling of keys, and a harsh grating of bolts. This aroused me.
“Get up,” commanded the jailer; “follow me.”
I rose, my hands trembling and my teeth chattering so that I could hardly re-arrange my clothes.
What fresh torture was in store for me? I dreaded to think.
At the first step I attempted to take I staggered and almost fell, but recovering myself, followed the turnkey.
After examining my fetters to make certain of their security, he led me through a long dark passage, up a flight of steps, down another, and through some intricate places, little more than tunnels. Unlocking a door, he bade me enter.
I did so, and found myself in a square cell, damp, and pitch dark, like my own. We had been joined by another jailer in our walk through the corridor, and both men entered with me.
As the lantern-light fell upon the straw I saw the cell was occupied; a man was lying there, fully dressed, and apparently asleep.
“Prisoner,” said the jailer, “take the clothes from off that man, dress yourself in them, and afterwards put your own on him.”
“But he will wake,” I said.
“Do as I bid,” growled the man; “and look sharp; or it will be the worse for you.”
For a moment I did not move. I felt dazed.
“Now; do you hear?” cried he angrily, shaking me roughly by the arm.