Right here at the outset, I had better make a clean breast of something which the reader will very soon suspect, anyhow: I am a plain, unpoetic, blunt-speaking man, trained as a civil engineer, and in most respects totally dissimilar from the man who wrote the first account of the Blind Spot.

Harry had already touched upon this. He came of an artistic family. I think he must have taken up law in the hope that the old saying would prove true: “The only certain thing about law is its uncertainty.” For he dearly loved the mysterious, the unknowable; he liked uncertainty for its excitement: and it is a mighty good thing that he was honest, for he would have made a highly dangerous crook.

Observe that I use the past tense in referring to my old friend. I do this in the interests of strict, scientific accuracy, to satisfy those who would contend that, having utterly vanished from sight and sound of man, Harry Wendel is no more.

But in my own heart is the firm conviction that he is still very much alive.

Within an hour of his astounding disappearance, my sister, Charlotte, and I made our way to an hotel; and despite the terrible nature of what had happened, we managed to get a few hours rest. The following morning Charlotte declared herself quite strong enough to discuss the situation. We lost no time.

It will be remembered that I had spent nearly the whole of the preceding year in South America, putting through an irrigation scheme. Thus, I knew little of what had occurred in that interval. On the other hand, Harry and I had never seen fit to take Charlotte into our confidence as, I now see, we should have done.

So we fairly pounced upon the manuscript which Harry had left behind. And by the time we had finished reading it, I for one, had reached one solid conclusion.

“I'm convinced,” I said, “that the stranger—Rhamda Avec—is an out-and-out villain. Despite his agreeable ways, I think he was solely and deliberately to blame for Professor Holcomb's disappearance. Consequently, this Rhamda is, in himself, a very valuable clue as to Harry's present predicament.”

Referring to Harry's notes, I pointed out the fact that, although Avec had often been seen on the streets of San Francisco, yet the police had never been able to lay hands on him. This seemed to indicate that the man might possess the power of actually making himself visible or invisible, at will.

“Only”—I was careful to add—“understand, I don't rank him as a magician, or sorcerer; nothing like that. I'd rather think that he's merely in possession of a scientific secret, no more wonderful in itself than, say, wireless. He's merely got hold of it in advance of the others; that's all.”

“Then you think that the woman, too, is human?”

“The Nervina?” I hesitated. “Perhaps you know more of this part of the thing than I do.”

“I only know”—slowly—“that she came and told me that Harry was soon to call. And somehow, I never felt jealous of her, Hobart.” Then she added: “At the same time, I can understand that Harry might—might have fallen in love with her. She—she was very beautiful.”

Charlotte is a brave girl. She kept her voice as steady as my own.

We next discussed the disappearance of Chick Watson. These details are already familiar to the reader of Harry's story; likewise what happened to Queen, his Australian shepherd. Like the other vanishings, it was followed by a single stroke on that prodigious, invisible bell—what Harry calls “The Bell of the Blind Spot.” And he has already mentioned my opinion, that this phenomenon signifies the closing of the portal of the unknown—the end of the special conditions which produce the bluish spot on the ceiling, the incandescent streak of light, and the vanishing of whoever falls into the affected region. The mere fact that no trace of the bell ever was found has not shaken my opinion.

And thus we reached the final disappearance, that which took away Harry. Charlotte contrived to keep her voice as resolute as before, as she said:

“He and the Nervina vanished together. I turned round just as she rushed in, crying out, 'I can't let you go alone! I'll save you, even beyond.' That's all she said, before—it happened.”

“You saw nothing of the Rhamda then?”

“No.”

And we had neither seen nor heard of him since. Until we got in touch with him, one important clue as to Harry's fate was out of our reach. There remained to us just one thread of hope—the ring, which Charlotte was now wearing on her finger.

I lit a match and held it to the face of the gem. As happened many times before, the stone exhibited its most astounding quality. As soon as faintly heated, the surface at first clouded, then cleared in a curious fashion, revealing a startling distinct, miniature likeness of the four who had vanished into the Blind Spot.

I make no attempt to explain this. Somehow or other, that stone possesses a telescopic quality which brings to a focus, right in front of the beholder's eyes, a tiny “close-up” of our vanished friends. Also, the gem magnifies what it reveals, so that there is not the slightest doubt that Dr. Holcomb, Chick Watson, Queen and Harry Wendel are actually reproduced—I shall not say, contained—in that gem. Neither shall I say that they are reflected; they are simply reproduced there.

Also, it should be understood that their images are living. Only the heads and shoulders of the men are to be seen; but there is animation of the features, such as cannot be mistaken. Granted that these four vanished in the Blind Spot—whatever that is—and granted that this ring is some inexplicable window or vestibule between that locality and this commonplace world of ours, then, manifestly, it would seem that all four are still alive.

“I am sure of it!” declared Charlotte, managing to smile, wistfully, at the living reproduction of her sweetheart. “And I think Harry did perfectly right, in handing it to me to keep.”

“Why?”

“Well, if for no other reason than because it behaves so differently with me, than it did with him.

“Hobart, I am inclined to think that this fact is very significant. If Chick had only known of it, he wouldn't have insisted that Harry should wear it; and then—”

“Can't be helped,” I interrupted quickly. “Chick didn't know; he was only certain that someone—SOMEONE—must wear the ring; that it mustn't pass out of the possession of humans. Moreover, much as Rhamda Avec may desire it—and the Nervina, too—neither can secure it through the use of force. Nobody knows why.”

Charlotte shivered. “I'm afraid there's something spooky about it, after all.”

“Nothing of the sort,” with a conviction that has never left me. “This ring is a perfectly sound fact, as indisputable as the submarine. There's nothing supernatural about it; for that matter, I personally doubt if there's ANYTHING supernatural. Every phenomenon which seems, at first, so wonderful, becomes commonplace enough as soon as explained. Isn't it true that you yourself are already getting used to that ring?”

“Ye—es,” reluctantly. “That is, partly. If only it were someone other than Harry!”

“Of course,” I hurried to say, “I only wanted to make it clear that we haven't any witchcraft to deal with. This whole mystery will become plain as day, and that damned soon!”

“You've got a theory?”—hopefully.

“Several; that's the trouble!” I had to admit. “I don't know which is best to follow out.—It may be a spiritualistic thing after all. Or it may fall under the head of 'abnormal psychology'. Nothing but hallucinations, in other words.”

“Oh, that won't do!”—evidently distressed. “I know what I saw! I'd doubt my reason if I thought I'd only fancied it!”

“So would I. Well, laying aside the spiritualistic theory, there remains the possibility of some hitherto undiscovered scientific secret. And if the Rhamda is in possession of it, then the matter simmers down to a plain case of villainy.”

“But how does he do it?”

“That's the whole question. However, I'm sure of this”—I was fingering the ring as I spoke. The reproduction of our friends had faded, now, leaving that dully glowing pale blue light once more. “This ring is absolutely real; it's no hallucination. It performs as well in broad daylight as in the night; no special conditions needed. It's neither a fraud nor an illusion.

“In short, this ring is merely a phenomenon which science has not YET explained! That it can and will be explained is strictly up to us! Once we understand its peculiar properties, we can mighty soon rescue Harry!”

And it was just then that a most extraordinary thing occurred. It happened so very unexpectedly, so utterly without warning, that it makes me shaky to this day whenever I recall it.

From the gem on Charlotte's finger—or rather, from the air surrounding the ring—came an unmistakable sound. We saw nothing whatever; we only heard. And it was clear, as loud and as startling as though it had occurred right in the room where we were discussing the situation.

It was the sharp, joyous bark of a dog.