“We will now give you a free show, Inspector,” he said, genially, “of our camera obscura!”

He pulled down the blinds, which Bristol noted with interest to be black, but through an opening in one of them a mysterious ray of light—the same that he had noticed from Fleet Street—shone upon that point in the ceiling where the arrangement of mirrors was attached. Dexter made some alteration, apparently in the focus of the lens (for Bristol had divined that in some way a lens had been fixed in the reflector above the bank window below) and the disc of light became concentrated. The white-covered table was moved slightly, and in the darkness some further manipulation was performed.

“Observe,” came the strident voice—“we now have upon the screen here a minute moving picture. This little device, which is not protected in any way, is of my own invention, and proved extremely useful in the Arkwright jewel case, which startled Chicago. It has proved useful now. I know almost as much concerning the arrangements below as the manager himself. In confidence, Inspector, this is my last bid for the slipper! I have plunged on it. Madame Sforza, the distinguished Italian lady who recently opened an account below, opened it for 500 pounds cash. She has drawn a portion, but a balance remains which I am resigned to lose. Her motor-car (hired), her references (forged), the case of jewels which she deposited this morning (duds!)—all represent a considerable outlay. It’s a nerve-racking line of operation, too. Any hour of the day may bring such a visitor as yourself, for example. In short, I am at the end of my tether.”

Bristol, ignoring the increasing pain in his arms and wrists, turned his eyes upon the white-covered table and there saw a minute and clear-cut picture, such as one sees in a focussing screen, of the interior of the manager’s office of the London County and Provincial Bank!

CHAPTER XXVI
THE STRONG-ROOM

I wonder how often a sense of humour has saved a man from desperation? Perhaps only the Easterns have thoroughly appreciated that divine gift. I have interpolated the adventure of Inspector Bristol in order that the sequence of my story be not broken; actually I did not learn it until later, but when, on the following day, the whole of the facts came into my possession, I laughed and was glad that I could laugh, for laughter has saved many a man from madness.

Certainly the Fates were playing with us, for at a time very nearly corresponding with that when Bristol found himself bound and helpless in Bank Chambers I awoke to find myself tied hand and foot to my own bed! Nothing but the haziest recollections came to me at first, nothing but dim memories of the awful being who had lured me there; for I perceived now that all the messages proceeded, not from Bristol, but from Hassan of Aleppo! I had been a fool, and I was reaping the fruits of my folly. Could I have known that almost within pistol shot of me the Inspector was trussed up as helpless as I, then indeed my situation must have become unbearable, since upon him I relied for my speedy release.

My ankles were firmly lashed to the rails at the foot of my bed; each of my wrists was tied back to a bedpost. I ached in every limb and my head burned feverishly, which latter symptom I ascribed to the powerful drug which had been expelled into my face by the uncanny weapon carried by Hassan of Aleppo. I reflected bitterly how, having transferred my quarters to the Astoria, I could not well hope for any visitor to my chambers; and even the event of such a visitor had been foreseen and provided against by the cunning lord of the Hashishin. A gag, of the type which Dumas has described in “Twenty Years After,” the poire d’angoisse, was wedged firmly into my mouth, so that only by preserving the utmost composure could I breathe. I was bathed in cold perspiration. So I lay listening to the familiar sounds without and reflecting that it was quite possible so to lie, undisturbed, and to die alone, my presence there wholly unsuspected!

Once, toward dusk, my phone bell rang, and my state of mind became agonizing. It was maddening to think that someone, a friend, was virtually within reach of me, yet actually as far removed as if an ocean divided us! I tasted the hellish torments of Tantalus. I cursed fate, heaven, everything; I prayed; I sank into bottomless depths of despair and rose to dizzy pinnacles of hope, when a footstep sounded on the landing and a thousand wild possibilities, vague possibilities of rescue, poured into my mind.

The visitor hesitated, apparently outside my door; and a change, as sudden as lightning out of a cloud, transformed my errant fancies. A gruesome conviction seized me, as irrational as the hope which it displayed, that this was one of the Hashishin—an apish yellow dwarf, a strangler, the awful Hassan himself!