"Listen!" cried the old maniac fiercely. "You must help me. Men are blind, blind, blind! Europe is crumbling, nations are bankrupt—chaos—chaos—chaos is everywhere. Everything else is decreasing in value; only the American dollar climbs up and up and up. Sell, sell, sell while there is time! Commercial houses are tottering, dividends are not being paid, the employment of labour becomes less and less—the end is near. And fools cling to their business enterprises; and their capital shrinks and is swallowed up and lost. Lost!" The man was working himself into a frenzy. His voice rose in a shriek. "Lost! Do you not see? Do you not understand? Money alone has any value. And the less money there is left in the world, and the more that is lost, the greater will be the value of what remains. It will multiply itself by the thousandfold. Look! Look what is on the table here! It will become a wealth beyond counting in any case, and if no one will believe me then the more it will be worth because there will be the less money to compete against it. Millions! Millions! Hundreds of millions! But I am not selfish. I do not wish to see the ruin of the world. And you—you! You will now be responsible. They will not listen to me because they say I am mad—I, who alone have the vision to see, and the courage to act. But your father will listen to you and he will believe you, and the great financiers of America will follow your father, and—"
Subconsciously Locke was aware that the old maniac was still talking, the crazed words rising in shrieks of passionate intensity—but he was no longer paying any attention to the other. He was staring again at the glass tank, behind and a little to one side of the old madman, that contained the sea-horse. The creature was most strange! It was only a small and diminutive thing, but, unless he were the victim of an hallucination, it had taken on an extraordinary appearance. It seemed to possess human eyes; to assume almost the shape of a face—only there was a shadow across it. The water rippled a little. The sea-horse moved to the opposite corner of the tank—but the eyes remained in exactly the same original spot.
Locke leaned nonchalantly back in his chair, though his lips were compressed now into a thin, grim line. They were human eyes, and the shadow across the face was a mask. Where did it come from? He began trying to figure out the angle of reflection. The face of each glass tank, of course, with the deeper-hued water behind it, was nothing more or less than a reflecting mirror. What was that dark straight line above the eyes? To begin with, the reflection must come from somewhere behind him, and well to one side of him. Taking into consideration the position in which Mr. Marlin stood, it must be the left-hand side. The tanks, then, that would seem to answer that requirement became instantly limited in number—it must be either the first or second tank of those that formed the left-hand side of the alleyway nearest to where he sat, and that, like the spoke of the wheel, led obliquely to the wall. He could not see the wall, but— Yes, he had it now. There was a window there. That dark line above the eyes was the window shade—raised six inches or so from the sill. It could easily have been accomplished—even if the old madman had carefully drawn every shade and shut every window in the place, as presumably he had. The drip and trickle, the running water, would have deadened any little sound made in forcing the window, and after that to reach in and manipulate the shade would have been but child's play.
Locke's eyes shifted now to the old madman. What was to be done? The other, still rocking and swaying upon his feet, still flinging his arms about in mad gestures, his facial muscles twitching violently as he shrieked out his words, was already verging on a state of acute hysteria. Even to hint at the possibility that they were being watched would not only have a probably very dangerous effect upon the maniac, but would in itself defeat any chance of turning the tables on that watcher outside the window! Whose eyes were those, whose face was that behind the mask? Intuitively he felt he knew—the trail went back, broad and well defined, to London. Newcombe! Captain Francis Newcombe! Who else could it be? His jaws clamped hard together now. How turn intuition into a practical, visible certainty—by stripping that mask from the other's face?
The eyes were still there in the tank.
His mind was working keenly, swiftly now. Suppose he made some excuse to leave the aquarium and stole around outside to that window? No; that would not do. In the first place, he probably could not get away from the old madman; and, if he could, he dared not, for the length of time it would take him to accomplish any such purpose, leave the other alone with that money on the table and subject to attack from an open window only a few feet away. There was only one thing to do. The man outside the window there, unaware that his presence was known, would naturally not consider that he, Locke, was a factor to be reckoned with when, say, the old madman left the aquarium here to return the money to its hiding place, wherever that might be; and therefore, if he, Locke, could manage to keep ward over Mr. Marlin without being seen himself, the man out there would almost certainly rise to the bait and bring about his own downfall. The money was in evidence for the first time; its whereabouts known—and the man in the mask would be illogical indeed if he allowed it to be restored to the security of a secret hiding place without making an attempt to get it when an opportunity such as this apparently presented itself. But against this was a certain risk to which the old man would be subjected; if not a physical risk, then a mental one—which latter, to one in Mr. Marlin's condition, would probably be the more dangerous of the two. And then there was the chance, too, that if luck turned an ugly trick the money itself might be in jeopardy. The old maniac's unconscious co-operation must be secured. The hiding place was somewhere outside the house. That was obvious, both from Mr. Marlin's nocturnal habits, and from the even more significant fact that the old madman, in coming to this appointment here to-night, had brought the money with him from somewhere outdoors. Also it seemed to be no secret that Mr. Marlin roamed abroad at night. Polly had spoken of it without reserve. It was therefore but fair to presume that one as interested as was the man outside the window, and particularly if it were Newcombe, was in possession of this knowledge, and being in possession of it was equally capable of putting two and two together, and would expect the old maniac to go out again to-night—with the money. If then, without unduly alarming him, Mr. Marlin could be persuaded to remain in the house with his money to-night, it would not only be the safest thing the old madman could do, but would afford him, Locke, if he were right in his supposition, an excellent chance to trap the man in the mask while the latter waited for his prey to come out.
Locke, leaning forward now, crossed his arms on the table, and nodded his head earnestly at the old maniac. One corner of the table at least was distinctly visible from where the window would be along that little alleyway between the rows of tanks, but he was careful not to glance in that direction. The reflection of the masked face still showed in the same place. What was the old madman saying? Well, it didn't matter, did it? He interrupted the other now.
"You are right, Mr. Marlin," he said gravely. "I agree with everything you have said. It is a most serious situation. I had no idea that there existed any such vital and immediate necessity of realising cash for every description of asset that we can lay our hands upon. And I had no idea of the immense potential value that this money here on the table, for instance, possesses. As you say, when the crash comes it will be worth untold millions—a fabulous amount."
"Yes, yes!" agreed the old man excitedly. He began to pat and fondle the bundles of bank notes. "Millions! Millions! Hundreds of millions!"
"The amount is so vast," said Locke, still earnestly, "that I cannot help thinking about what you said in reference to being followed out there in the woods last night. I don't think you should risk any chance of being followed to-night when you have all this great wealth with you, even though you are quite sure you have put whoever it may be off the scent, and that he, or they, will be busy somewhere else. I don't think, if I were you, I would go out of the house again to-night."