"Guess that means we're finished, suh," he opined moodily.

Ca.r.s.e had walked to the lone door and found, as he of course expected, that it was tightly locked. He responded crisply:

"It's not like you to talk that way, Eclipse. We're far from that. We have succeeded in the first step--if, as I suspect, this cell is part of Dr. Ku's real headquarters--and surely before he decides to eliminate us we will be able to learn something of the nature of his s.p.a.ce-ship; perhaps how it can be attacked and conquered."

Conversation always cheered the naturally social Friday; he seldom had the opportunity for it with his usually curt master. He objected:

"But what good'll that do us, suh, if we take what we've learned to where it won't help anybody, least of all us? An' what chance we got against Ku Sui now, when we're prisoners? Why, he's a magician; it ain't natural, what he does. Lands in our ship plop right out of empty s.p.a.ce!

Puts us out with a wave of his handkerchief!" With final misery in his voice he added: "We're sunk, suh. This time we surely are."

Ca.r.s.e smiled at his emotional friend. "All you need is a good fight, Eclipse. It's thinking that disintegrates your morale; you should never try to think. Why--there was an anesthetic on that handkerchief! Simple enough; I might have expected it. As for his getting into our ship, he entered from behind, through the after port-lock, while we were looking for his ship on the visi-screen. I don't understand yet why we could not see his craft. It's too much to suppose he could make it invisible.

Paint, perhaps, or camouflage. He might have a way of preventing, from a distance, the registering of his ship on our screen. Oh, he's dangerous, clever, deep--but somewhere, there'll be a loophole. Somewhere. There always is." His tone changed, and he snapped: "Now be quiet. I want to think."

His face stiffened into a cold, calm mask, but behind his gray eyes lay anything but calmness. Ku Sui's easy a.s.sumption that the information as to Eliot Leithgow's whereabouts would be forthcoming from his lips, puzzled him, brought real anxiety. Torture would probably not be able to force his tongue to betray his friend, but there were perhaps other means. Of these he had a vague and ominous apprehension. Dr. Ku was preeminently a specialist in the human brain; he had implied his will to have that information. Suppose he should use something it was impossible to fight against?

And he alone, Hawk Ca.r.s.e, brought the responsibility. He had asked Leithgow where he would be, and he remembered well the place agreed upon. He dared not lose the battle of wits he knew was coming!...

His eyes shot to the door. It was opening. In a moment Ku Sui stood revealed there, and behind him, in the corridor, were three other figures, their yellow coolie faces strangely dumb and lifeless above the tasteful gray smocks which extended a little below their belted waists.

Each bore embroidered on his chest the planetary insignia of Ku Sui in yellow, and each was armed with two ray-guns.

"I must ask forgiveness, my friend, for these retainers who accompany me," the Eurasian began suavely. "Please don't let them disturb you, however; they are more robots than men, obeying only my words. A little adjustment of the brain, you understand. I have brought them only for your protection; for you would find it would result most unpleasantly to make a break for freedom."

"Of course, _you're_ not the one who wants protection!" sneered Friday, with devastating sarcasm. "Or else you'd 'a' brought a whole army!"

But the negro paled a little when the Oriental's green tiger eyes caught him full. It was with a physical shock--such was the power of the man--that he received the soft-spoken reply:

"Yours is a most subtle and entertaining wit, black one; I am overcome with the honor and pleasure of having you for my guest. But perhaps--may I suggest?--that you save your humor for a more suitable occasion. I would like to make the last few hours of your visit as pleasant as possible."

He turned to Hawk Ca.r.s.e. "I have thought that an inspection of this, my home in s.p.a.ce, would intrigue you more than anything else my poor hospitality affords. May I do you the honor, my friend?"

"You are too good to me," the Hawk replied frostily. "I will duplicate your kindness some day."

The Eurasian bowed. "After you," he said, and waited until Friday and the Hawk pa.s.sed first through the door. Close after them came the three automatons of yellow men.

The pa.s.sageway was square, plain and bare, and s.p.a.ced at intervals by other closed doors. "Storerooms in this wing," the Eurasian explained as they progressed. He stopped in front of one of the doors and pressed a b.u.t.ton beside it. It slid noiselessly open, revealing, not another room, but a short metal spider ladder. Up this they climbed, one of the guards going first in the half darkness; then a trap-door above opened to douse them with warm ruddy light. They stepped out.

And the scene that met them took them completely off guard. Friday gasped, and Ca.r.s.e so far lost his habitual poise as to stare in wonder.

Soil! And a great gla.s.sy dome!

Not a s.p.a.ce-ship, this realm of Ku Sui. Soil--soil with a whole settlement built upon it! Hard, grayish soil, and on it several buildings of the familiar burnished metal. And overhead, cupping the entire outlay, arched a great hemisphere of what resembled gla.s.s, ribbed with silvery supporting beams and struts: an enormous bowl, turned down, and on its other side the glorious vista of s.p.a.ce.

Straight above hung the red-belted disk of Jupiter, with the pale globes of Satellites II and III wheeling close, _and all of them were of the same relative size they had appeared when last seen from the Scorpion!_

Dr. Ku smiled unctuously at the puzzlement that showed on the faces of his captives.

"Have you noticed," he asked, "that you are still in the neighborhood of the spot in s.p.a.ce where we had our rendezvous? But this isn't another of Jupiter's satellites. Ah, no. This is my own world--my own personally controlled little world!"

"Snakes of the Santo!" Friday gasped, the whites of his eyes showing all around. "Then we must be on an asteroid!"

They were. From the far side of the dome ahead of them the asteroid stretched back hard and sharp in Jupiter's ruddy light against the backdrop of black s.p.a.ce. It was a craggy, uneven body, seemingly about twenty miles in length, pinched in the middle and thus shaped roughly like a peanut sh.e.l.l. One end had been leveled off to accommodate the dome with its cradled buildings; outside the dome all was untouched. The landscape was a gargantuan jumble of coa.r.s.e, hard, sharp rocks which had crystallized into a maze of hollows, crevices, long crazy splits and jagged out-thrusting lumps of boulders. Without an atmosphere, with but the feeblest of gravities and utterly without any form of life--save for that within the dome built upon it--it was simply a typical small asteroid, of which race only the largest are globe-shaped.

"Once," the Eurasian went on softly as they took all this in, "this world of mine circled with its thousands of fellows between Mars and Jupiter. I picked it from the rest because of certain mineral qualities, and had this air-containing dome constructed on it, and these buildings inside the dome. Then, with batteries of gravity-plates inserted precisely in the asteroid's center of gravity, I nullified the gravital pull of Mars and Jupiter, wrenched it from its age-old orbit and swung it free into s.p.a.ce. An achievement that would command the respect even of Eliot Leithgow, I think. So now you see, Ca.r.s.e; now you know. _This_ is my secret base, _this_ my hidden laboratory. I take it always with me, and I travel where I will."

The Hawk nodded coldly his acceptance of the astounding fact; he was too busy to make comment. He was observing the buildings, the nature of them, the exits from the dome, how they could best be reached.

They stood on the roof of the largest and central building, a low metal structure with four wings, crossing at right angles to make the figure of a great plus mark. The hub was probably Dr. Ku's chief laboratory, Ca.r.s.e conjectured. On each side stood other buildings, low, long, like barracks, with figures of coolies moving in and out. Workshops, living quarters, power-rooms, he supposed: power-rooms certainly, for a soft hum filled the air.

There were two great port-locks at ground level in the dome, one on each side, each sizable enough to admit the largest s.p.a.ce-ship and each flanked by a smaller, man-sized lock. To reach them....

"And over there," Dr. Ku's voice broke in, "you see your borrowed ship, the _Scorpion_. But please don't let it tempt you to cut short your visit with me, my friend. It would avail you nothing even if you reached her, for it requires a secret combination to open the port-locks, and my servants' brains have been so altered that they are physically incapable of divulging it to you. And of course I have offensive rays and other devices hidden about--just in case. All rather hopeless, isn't it? But surely interesting.

"Let us go: I have more. Below, in my main laboratory in the center of this building, there's something far more interesting, and it concerns you, Ca.r.s.e, and me, and also Master Scientist Eliot Leithgow." He let the words sink in. "Will you follow me?"

And so they went below again, down the spider ladder into the corridor.

There was nothing else to do: the guards, ever watchful, pressed close behind. But a tattoo of alarm was beating in Hawk Ca.r.s.e's brain. Eliot Leithgow again--the hint of something ominous to be aimed at him, Ca.r.s.e, for the extraction of information he alone possessed: the whereabouts of his elderly friend the Master Scientist.

CHAPTER V

_The Color-Storm_

The corridor was stopped by a heavy metal door. As the small party approached, it swung inward in two halves, and a figure clad in a white surgeon's smock emerged. He was a white man, tall, with highly intelligent face but eyes strangely dull and lifeless, like those of the coolie-guards. His gaze rested on Ku Sui, and the Eurasian asked him:

"Is it ready?"

"Yes, lord,"--tonelessly.

"Through here, then, my friends." The door opened and closed behind them as they stepped inside. "This is my main laboratory. And there, friend Ca.r.s.e, is the object which is to concern us."

With one glance the adventurer took in the laboratory. It was a great room, a perfect circle in shape, with doors opening into the four wings of the building. The walls were lined with strange, complicated machines, whose purpose he could not even guess at; in one place there was a table strewn with tangled shapes of wire, rows of odd-bulging tubes and other apparatus; and conspicuous by one door was an ordinary operating table, with light dome overhead. A tall wide screen placed a few feet out from the wall hid something bulky from view. Ca.r.s.e noted all these things; then his gaze went back to the object in the middle of the floor which Ku Sui had indicated.

It was, primarily, a chair, within a suspended framework of steely bars, themselves the foundation for a network of fine-drawn colored wires.

Shimmering, like the gossamer threads of a spider's spinning, they wove upward, around and over the chair, so that he who sat there would be completely surrounded by the gleaming mesh.