Chapter 4

What gave weight to this probability was that since the arrival of this report at Washington twenty-four hours before, the presence of the extraordinary boat hadn’t been announced from anywhere along the shore. Neither had it been seen on any other coast. Though, of course, the assertion that it would not reappear at all would have been hazardous, to say the least.

I noted another interesting and possibly important point. It was a singular coincidence which indeed Mr. Ward suggested to me, at the same moment that I was considering it. This was that only after the disappearance of the wonderful automobile had the no less wonderful boat come into view. Moreover, their engines both possessed a most dangerous power of locomotion. If both should go rushing at the same time over the face of the world, the same danger would threaten mankind everywhere, in boats, in vehicles, and on foot. Therefore it was absolutely necessary that the police should in some manner interfere to protect the public ways of travel.

That is what Mr. Ward pointed out to me; and our duty was obvious. But how could we accomplish this task? We discussed the matter for some time; and I was just about to leave when Mr. Ward made one last suggestion.

“Have you not observed, Strock,” said he, “that there is a sort of fantastic resemblance between the general appearance of this boat and this automobile?”

“There is something of the sort, Mr. Ward.”

“Well, is it not possible that the two are one?”

VI. THE FIRST LETTER

After leaving Mr. Ward I returned to my home in Long Street. There I had plenty of time to consider this strange case uninterrupted by either wife or children. My household consisted solely of an ancient servant, who having been formerly in the service of my mother, had now continued for fifteen years in mine.

Two months before I had obtained a leave of absence. It had still two weeks to run, unless indeed some unforeseen circumstance interrupted it, some mission which could not be delayed. This leave, as I have shown, had already been interrupted for four days by my exploration of the Great Eyrie.

And now was it not my duty to abandon my vacation, and endeavor to throw light upon the remarkable events of which the road to Milwaukee and the shore of New England had been in turn the scene? I would have given much to solve the twin mysteries, but how was it possible to follow the track of this automobile or this boat?

Seated in my easy chair after breakfast, with my pipe lighted, I opened my newspaper. To what should I turn? Politics interested me but little, with its eternal strife between the Republicans and the Democrats. Neither did I care for the news of society, nor for the sporting page. You will not be surprised, then, that my first idea was to see if there was any news from North Carolina about the Great Eyrie. There was little hope of this, however, for Mr. Smith had promised to telegraph me at once if anything occurred. I felt quite sure that the mayor of Morganton was as eager for information and as watchful as could have been myself. The paper told me nothing new. It dropped idly from my hand; and I remained deep in thought.

What most frequently recurred to me was the suggestion of Mr. Ward that perhaps the automobile and the boat which had attracted our attention were in reality one and the same. Very probably, at least, the two machines had been built by the same hand. And beyond doubt, these were similar engines, which generated this remarkable speed, more than doubling the previous records of earth and sea.

“The same inventor!” repeated I.

Evidently this hypothesis had strong grounds. The fact that the two machines had not yet appeared at the same time added weight to the idea. I murmured to myself, “After the mystery of Great Eyrie, comes that of Milwaukee and Boston. Will this new problem be as difficult to solve as was the other?”

I noted idly that this new affair had a general resemblance to the other, since both menaced the security of the general public. To be sure, only the inhabitants of the Blueridge region had been in danger from an eruption or possible earthquake at Great Eyrie. While now, on every road of the United States, or along every league of its coasts and harbors, every inhabitant was in danger from this vehicle or this boat, with its sudden appearance and insane speed.

I found that, as was to be expected, the newspapers not only suggested, but enlarged upon the dangers of the case. Timid people everywhere were much alarmed. My old servant, naturally credulous and superstitious, was particularly upset. That same day after dinner, as she was clearing away the things, she stopped before me, a water bottle in one hand, the serviette in the other, and asked anxiously, “Is there no news, sir?”

“None,” I answered, knowing well to what she referred.

“The automobile has not come back?”

“No.”

“Nor the boat?”

“Nor the boat. There is no news even in the best informed papers.”

“But—your secret police information?”

“We are no wiser.”

“Then, sir, if you please, of what use are the police?”

It is a question which has phased me more than once.

“Now you see what will happen,” continued the old housekeeper, complainingly. “Some fine morning, he will come without warning, this terrible chauffeur, and rush down our street here, and kill us all!”

“Good! When that happens, there will be some chance of catching him.”

“He will never be arrested, sir.”

“Why not?”

“Because he is the devil himself, and you can’t arrest the devil!”

Decidedly, thought I, the devil has many uses; and if he did not exist we would have to invent him, to give people some way of explaining the inexplicable. It was he who lit the flames of the Great Eyrie. It was he who smashed the record in the Wisconsin race. It is he who is scurrying along the shores of Connecticut and Massachusetts. But putting to one side this evil spirit who is so necessary, for the convenience of the ignorant, there was no doubt that we were facing a most bewildering problem. Had both of these machines disappeared forever? They had passed like a meteor, like a star shooting through space; and in a hundred years the adventure would become a legend, much to the taste of the gossips of the next century.

For several days the newspapers of America and even those of Europe continued to discuss these events. Editorials crowded upon editorials. Rumors were added to rumors. Story tellers of every kind crowded to the front. The public of two continents was interested. In some parts of Europe there was even jealousy that America should have been chosen as the field of such an experience. If these marvelous inventors were American, then their country, their army and navy, would have a great advantage over others. The United States might acquire an incontestable superiority.

Under the date of the tenth of June, a New York paper published a carefully studied article on this phase of the subject. Comparing the speed of the swiftest known vessels with the smallest minimum of speed which could possibly be assigned to the new boat, the article demonstrated that if the United States secured this secret, Europe would be but three days away from her, while she would still be five days from Europe.

If our own police had searched diligently to discover the mystery of the Great Eyrie, the secret service of every country in the world was now interested in these new problems.

Mr. Ward referred to the matter each time I saw him. Our chat would begin by his rallying me about my ill-success in Carolina, and I would respond by reminding him that success there was only a question of expense.

“Never mind, my good Strock,” said he, “there will come a chance for our clever inspector to regain his laurels. Take now this affair of the automobile and the boat. If you could clear that up in advance of all the detectives of the world, what an honor it would be to our department! What glory for you!”

“It certainly would, Mr. Ward. And if you put the matter in my charge—”

“Who knows, Strock? Let us wait a while! Let us wait!”

Matters stood thus when, on the morning of June fifteenth, my old servant brought me a letter from the letter-carrier, a registered letter for which I had to sign. I looked at the address. I did not know the handwriting. The postmark, dating from two days before, was stamped at the post office of Morganton.

Morganton! Here at last was, no doubt, news from Mr. Elias Smith.

“Yes!” exclaimed I, speaking to my old servant, for lack of another, “it must be from Mr. Smith at last. I know no one else in Morganton. And if he writes he has news!”

“Morganton?” said the old woman, “isn’t that the place where the demons set fire to their mountain?”

“Exactly.”

“Oh, sir! I hope you don’t mean to go back there!”

“Why not?”

“Because you will end by being burned up in that furnace of the Great Eyrie. And I wouldn’t want you buried that way, sir.”

“Cheer up, and let us see if it is not better news than that.”

The envelope was sealed with red sealing wax, and stamped with a sort of coat of arms, surmounted with three stars. The paper was thick and very strong. I broke the envelope and drew out a letter. It was a single sheet, folded in four, and written on one side only. My first glance was for the signature.

There was no signature! Nothing but three initials at the end of the last line!

“The letter is not from the Mayor of Morganton,” said I.

“Then from whom?” asked the old servant, doubly curious in her quality as a woman and as an old gossip.

Looking again at the three initials of the signature, I said, “I know no one for whom these letters would stand; neither at Morganton nor elsewhere.”

The hand-writing was bold. Both up strokes and down strokes very sharp, about twenty lines in all. Here is the letter, of which I, with good reason, retained an exact copy. It was dated, to my extreme stupefaction, from that mysterious Great Eyrie:

Great Eyrie, Blueridge Mtns, To Mr. Strock: North Carolina, June 13th. Chief Inspector of Police, 34 Long St., Washington, D. C.

Sir, You were charged with the mission of penetrating the Great Eyrie. You came on April the twenty-eighth, accompanied by the Mayor of Morganton and two guides. You mounted to the foot of the wall, and you encircled it, finding it too high and steep to climb. You sought a breech and you found none. Know this: none enter the Great Eyrie; or if one enters, he never returns. “Do not try again, for the second attempt will not result as did the first, but will have grave consequences for you. “Heed this warning, or evil fortune will come to you.

“M. o. W.”

VII. A THIRD MACHINE

I confess that at first this letter dumfounded me. “Ohs!” and “Ahs!” slipped from my open mouth. The old servant stared at me, not knowing what to think.

“Oh, sir! is it bad news?”

I answered for I kept few secrets from this faithful soul by reading her the letter from end to end. She listened with much anxiety.

“A joke, without doubt,” said I, shrugging my shoulders.

“Well,” returned my superstitious handmaid, “if it isn’t from the devil, it’s from the devil’s country, anyway.”

Left alone, I again went over this unexpected letter. Reflection inclined me yet more strongly to believe that it was the work of a practical joker. My adventure was well known. The newspapers had given it in full detail. Some satirist, such as exists even in America, must have written this threatening letter to mock me.

To assume, on the other hand, that the Eyrie really served as the refuge of a band of criminals, seemed absurd. If they feared that the police would discover their retreat, surely they would not have been so foolish as thus to force attention upon themselves. Their chief security would lie in keeping their presence there unknown. They must have realized that such a challenge from them would only arouse the police to renewed activity. Dynamite or melinite would soon open an entrance to their fortress. Moreover, how could these men have, themselves, gained entrance into the Eyrie unless there existed a passage which we had failed to discover? Assuredly the letter came from a jester or a madman; and I need not worry over it, nor even consider it.

Hence, though for an instant I had thought of showing this letter to Mr. Ward, I decided not to do so. Surely he would attach no importance to it. However, I did not destroy it, but locked it in my desk for safe keeping. If more letters came of the same kind, and with the same initials, I would attach as little weight to them as to this.

Several days passed quietly. There was nothing to lead me to expect that I should soon quit Washington; though in my line of duty one is never certain of the morrow. At any moment I might be sent speeding from Oregon to Florida, from Maine to Texas. And this unpleasant thought haunted me frequently if my next mission were no more successful than that to the Great Eyrie, I might as well give up and hand in my resignation from the force. Of the mysterious chauffeur or chauffeurs, nothing more was heard. I knew that our own government agents, as well as foreign ones, were keeping keen watch over all the roads and rivers, all the lakes and the coasts of America. Of course, the size of the country made any close supervision impossible; but these twin inventors had not before chosen secluded and unfrequented spots in which to appear. The main highway of Wisconsin on a great race day, the harbor of Boston, incessantly crossed by thousands of boats, these were hardly what would be called hiding-places! If the daring driver had not perished of which there was always strong probability; then he must have left America. Perhaps he was in the waters of the Old World, or else resting in some retreat known only to himself, and in that case—

“Ah!” I repeated to myself, many times, “for such a retreat, as secret as inaccessible, this fantastic personage could not find one better than the Great Eyrie!” But, of course, a boat could not get there, any more than an automobile. Only high-flying birds of prey, eagles or condors, could find refuge there.

The nineteenth of June I was going to the police bureau, when, on leaving my house, I noticed two men who looked at me with a certain keenness. Not knowing them, I took no notice; and if my attention was drawn to the matter, it was because my servant spoke of it when I returned.

For some days, she said, she had noticed that two men seemed to be spying upon me in the street. They stood constantly, perhaps a hundred steps from my house; and she suspected that they followed me each time I went up the street.

“You are sure?” I asked.

“Yes, sir, and no longer ago than yesterday, when you came into the house, these men came slipping along in your footsteps, and then went away as soon as the door was shut behind you.”

“You must be mistaken!”

“I am not, sir.”

“And if you met these two men, you would know them?”

“I would.”

“Good;” I cried, laughing, “I see you have the very spirit for a detective. I must engage you as a member of our force.”

“Joke if you like, sir. But I have still two good eyes, and I don’t need spectacles to recognize people. Someone is spying on you, that’s certain; and you should put some of your men to track them in turn.”

“All right; I promise to do so,” I said, to satisfy her. “And when my men get after them, we shall soon know what these mysterious fellows want of me.”

In truth I did not take the good soul’s excited announcement very seriously. I added, however, “When I go out, I will watch the people around me with great care.”

“That will be best, sir.”

My poor old housekeeper was always frightening herself at nothing. “If I see them again,” she added, “I will warn you before you set foot out of doors.”

“Agreed!” And I broke off the conversation, knowing well that if I allowed her to run on, she would end by being sure that Beelzebub himself and one of his chief attendants were at my heels.

The two following days, there was certainly no one spying on me, either at my exits or entrances. So I concluded my old servant had made much of nothing, as usual. But on the morning of the twenty-second of June, after rushing upstairs as rapidly as her age would permit, the devoted old soul burst into my room and in a half whisper gasped “Sir! Sir!”

“What is it?”

“They are there!”

“Who?” I queried, my mind on anything but the web she had been spinning about me.

“The two spies!”

“Ah, those wonderful spies!”

“Themselves! In the street! Right in front of our windows! Watching the house, waiting for you to go out.”

I went to the window and raising just an edge of the shade, so as not to give any warning, I saw two men on the pavement.

They were rather fine-looking men, broad-shouldered and vigorous, aged somewhat under forty, dressed in the ordinary fashion of the day, with slouched hats, heavy woolen suits, stout walking shoes and sticks in hand. Undoubtedly, they were staring persistently at my apparently unwatchful house. Then, having exchanged a few words, they strolled off a little way, and returned again.

“Are you sure these are the same men you saw before?”

“Yes, sir.”

Evidently, I could no longer dismiss her warning as a hallucination; and I promised myself to clear up the matter. As to following the men myself, I was presumably too well known to them. To address them directly would probably be of no use. But that very day, one of our best men should be put on watch, and if the spies returned on the morrow, they should be tracked in their turn, and watched until their identity was established.

At the moment, were they waiting to follow me to police headquarters? For it was there that I was bound, as usual. If they accompanied me I might be able to offer them a hospitality for which they would scarce thank me.

I took my hat; and while the housekeeper remained peeping from the window, I went down stairs, opened the door, and stepped into the street.

The two men were no longer there.

Despite all my watchfulness, that day I saw no more of them as I passed along the streets. From that time on, indeed, neither my old servant nor I saw them again before the house, nor did I encounter them elsewhere. Their appearance, however, was stamped upon my memory, I would not forget them.

Perhaps after all, admitting that I had been the object of their espionage, they had been mistaken in my identity. Having obtained a good look at me, they now followed me no more. So in the end, I came to regard this matter as of no more importance than the letter with the initials, M. o. W.

Then, on the twenty-fourth of June, there came a new event, to further stimulate both my interest and that of the general public in the previous mysteries of the automobile and the boat. The Washington Evening Star published the following account, which was next morning copied by every paper in the country.

“Lake Kirdall in Kansas, forty miles west of Topeka, is little known. It deserves wider knowledge, and doubtless will have it hereafter, for attention is now drawn to it in a very remarkable way.

“This lake, deep among the mountains, appears to have no outlet. What it loses by evaporation, it regains from the little neighboring streamlets and the heavy rains.

“Lake Kirdall covers about seventy-five square miles, and its level is but slightly below that of the heights which surround it. Shut in among the mountains, it can be reached only by narrow and rocky gorges. Several villages, however, have sprung up upon its banks. It is full of fish, and fishing-boats cover its waters.

“Lake Kirdall is in many places fifty feet deep close to shore. Sharp, pointed rocks form the edges of this huge basin. Its surges, roused by high winds, beat upon its banks with fury, and the houses near at hand are often deluged with spray as if with the downpour of a hurricane. The lake, already deep at the edge, becomes yet deeper toward the center, where in some places soundings show over three hundred feet of water.

“The fishing industry supports a population of several thousands, and there are several hundred fishing boats in addition to the dozen or so of little steamers which serve the traffic of the lake. Beyond the circle of the mountains lie the railroads which transport the products of the fishing industry throughout Kansas and the neighboring states.

“This account of Lake Kirdall is necessary for the understanding of the remarkable facts which we are about to report.”

And this is what the Evening Star then reported in its startling article. “For some time past, the fishermen have noticed a strange upheaval in the waters of the lake. Sometimes it rises as if a wave surged up from its depths. Even in perfectly calm weather, when there is no wind whatever, this upheaval sometimes arises in a mass of foam.

“Tossed about by violent waves and unaccountable currents, boats have been swept beyond all control. Sometimes they have been dashed one against another, and serious damage has resulted.

“This confusion of the waters evidently has its origin somewhere in the depths of the lake; and various explanations have been offered to account for it. At first, it was suggested that the trouble was due to seismic forces, to some volcanic action beneath the lake; but this hypothesis had to be rejected when it was recognized that the disturbance was not confined to one locality, but spread itself over the entire surface of the lake, either at one part or another, in the center or along the edges, traveling along almost in a regular line and in a way to exclude entirely all idea of earthquake or volcanic action.

“Another hypothesis suggested that it was a marine monster who thus upheaved the waters. But unless the beast had been born in the lake and had there grown to its gigantic proportions unsuspected, which was scarce possible, he must have come there from outside. Lake Kirdall, however, has no connection with any other waters. If this lake were situated near any of the oceans, there might be subterranean canals; but in the center of America, and at the height of some thousands of feet above sea-level, this is not possible. In short, here is another riddle not easy to solve, and it is much easier to point out the impossibility of false explanations, than to discover the true one.

“Is it possible that a submarine boat is being experimented with beneath the lake? Such boats are no longer impossible today. Some years ago, at Bridgeport, Connecticut, there was launched a boat, The Protector, which could go on the water, under the water, and also upon land. Built by an inventor named Lake, supplied with two motors, an electric one of seventy-five horse power, and a gasoline one of two hundred and fifty horse power, it was also provided with wheels a yard in diameter, which enabled it to roll over the roads, as well as swim the seas.

“But even then, granting that the turmoil of Lake Kirdall might be produced by a submarine, brought to a high degree of perfection, there remains as before the question how could it have reached Lake Kirdall? The lake, shut in on all sides by a circle of mountains, is no more accessible to a submarine than to a sea-monster.

“In whatever way this last puzzling question may be solved, the nature of this strange appearance can no longer be disputed since the twentieth of June. On that day, in the afternoon, the schooner ‘Markel’ while speeding with all sails set, came into violent collision with something just below the water level. There was no shoal nor rock near; for the lake in this part is eighty or ninety feet deep. The schooner with both her bow and her side badly broken, ran great danger of sinking. She managed, however, to reach the shore before her decks were completely submerged.