"For your life--such as is left of it--you may thank Herr Doktor Kreiss," he told Chet. "I thought at first you would have attempted to kill us." His smile, as he regarded them, seemed to Chet to be entirely evil. "You were near death twice, my dear Herr Bullard; and the danger is not entirely removed.

"'Forty-seven hours' you have said; in forty-seven hours you will land us on the Dark Moon. If you do not,"--he raised the pistol suggestively--"remember that the pilot, Max, can always take us back to Earth. You are not indispensable."

Chet looked at the dark face and its determined and ominous scowl.

"You're a cheerful sort of soul, aren't you?" he demanded. "Do you have any faint idea of what a job this is? Do you know we will shoot another two hundred thousand miles straight out before I can check this ship? Then we come back; and meanwhile the Dark Moon has gone on its way. Had you thought that there's a lot of room to get lost in out here?"

"Forty-seven hours!" said Schwartzmann. "I would advise that you do not lose your way."

Chet shot one quizzical glance at Harkness.

"That," he said, "makes it practically unanimous."

Schwartzmann, with an elaborate show of courtesy, escorted Diane Delacouer to a cabin where she might rest. At a questioning look between Diane and Harkness, their captor rea.s.sured them.

"Mam'selle shall be entirely safe," he said. "She may join you here whenever she wishes. As for you,"--he was speaking to Harkness--"I will permit you to stay here. I could tie you up but this iss not necessary."

And Harkness must have agreed that it was indeed unnecessary, for either Kreiss or Max, or some other of Schwartzmann's men, was at his side continuously from that moment on.

Chet would have liked a chance for a quiet talk and an exchange of ideas. It seemed that somewhere, somehow, he should be able to find an answer to their problem. He stared moodily out into the blackness ahead, where a distant star was seemingly their goal. Harkness stood at his side or paced back and forth in the little room, until he threw himself, at last, upon a cot.

And always the great stern-blast roared; m.u.f.fled by the insulated walls, its unceasing thunder came at last to be unheard. To the pilot there was neither sound nor motion. His directional sights were unswervingly upon that distant star ahead. Seemingly they were suspended, helpless and inert, in a black void. But for the occasional glowing ma.s.ses of strange living substance that flashed past in this ocean of s.p.a.ce, he must almost have believed they were motionless--a dead ship in a dead, black night.

But the luminous things flashed and were gone--and their coming, strangely, was from astern; they flicked past and vanished up ahead.

And, by this, Chet knew that their tremendous momentum was unchecked.

Though he was using the great stern blast to slow the ship, it was driving stern-first into outer s.p.a.ce. Nor, for twenty hours, was there a change, more than a slackening of the breathless speed with which the lights went past.

Twenty hours--and then Chet knew that they were in all truth hung motionless, and he prayed that his figures that told him this were correct.... More timeless minutes, an agony of waiting--and a dimly-glowing ma.s.s that was ahead approached their bow, swung off and vanished far astern. And, with its going, Chet knew that the return trip was begun.

He gave Harkness the celestial bearing marks and relinquished the helm. "Full speed ahead as you are," he ordered: "then at nineteen-forty on W.S. time, we'll cut it and ease on bow repulsion to the limit."

And, despite the strangeness of their surroundings, the ceaseless, murmuring roar of the exhaust, the weird world outside, where endless s.p.a.ce was waiting for man's exploration--despite the deadly menace that threatened, Chet dropped his head upon his outflung arms and slept.

To his sleep-drugged brain it was scarcely a moment until a hand was dragging at his shoulder.

"Forty-seven hours!" the voice of Schwartzmann was saying.

And: "Some navigating!" Harkness was exclaiming in flattering amazement. "Wake up, Chet! Wake up! The Dark Moon's in sight. You've hit it on the nose, old man: she isn't three points off the sights!"

The bow-blast was roaring full on. Ahead of them Chet's sleepy eyes found a circle of violet; and he rubbed his eyes savagely that he might take his bearings on Sun and Earth.

As it had been before, the Earth was a giant half-moon; like a mirror-sphere it shot to them across the vast distance the reflected glory of the sun. But the globe ahead was a ghostly world. Its black disk was lost in the utter blackness of s.p.a.ce. It was a circle, marked only by the absence of star-points and by the halo of violet glow that edged it about.

Chet cut down the repelling blast. He let the circle enlarge, then swung the ship end for end in mid-s.p.a.ce that the more powerful stern exhaust might be ready to counteract the gravitational pull of the new world.

Again those impalpable clouds surrounded them. Here was the enveloping gas that made this a dark moon--the gas, if Harkness' theory was correct, that let the sun's rays pa.s.s unaltered; that took the light through freely to illumine this globe, but that barred its return pa.s.sage as reflected light.

Black--dead black was the void into which they were plunging, until the darkness gave way before a gentle glow that enfolded their ship.

The golden light enveloped them in growing splendor. Through every lookout it was flooding the cabin with brilliant rays, until, from below them, directly astern of the ship, where the thundering blast checked their speed of descent, emerged a world.

And, to Chet Bullard, softly fingering the controls of the first ship of s.p.a.ce--to Chet Bullard, whose uncanny skill had brought the tiny speck that was their ship safely back from the dark recesses of the unknown--there came a thrill that transcended any joy of the first exploration.

Here was water in great seas of unreal hue--and those seas were his!

Vast continents, ripe for adventure and heavy with treasure--and they, too, were his! His own world--his and Diane's and Walt's! Who was this man, Schwartzmann, that dared dream of violating their possessions?

A slender tube pressed firmly, uncompromisingly, into his back to give the answer to his question. "Almost I wish you had missed it!" Herr Schwartzmann was saying. "But now you will land; you will set us down in some place that you know. No tricks, Herr Bullard! You are clever, but not clever enough for that. We will land, yess, where you know it is safe."

From the lookout, the man stared for a moment with greedy eyes; then brought his gaze back to the three. His men, beside Harkness and Diane, were alert; the scientist, Kreiss, stood close to Chet.

"A nice little world," Schwartzmann told them. "Herr Harkness, you have filed claims on it; who am I to dispute with the great Herr Harkness? Without question it iss yours!"

He laughed loudly, while his eyes narrowed between creasing wrinkles of flesh. "You shall enjoy it," he told them; "--all your life."

And Chet, as he caught the gaze of Harkness and Diane, wondered how long this enjoyment would last. "All your life!" But this was rather indefinite as a measure of time.

CHAPTER V

_A Desperate Act_

The ship that Chet Bullard and Harkness had designed had none of the instruments for s.p.a.ce navigation that the ensuing years were to bring.

Chet's accuracy was more the result of that flyer's sixth sense--that same uncanny power that had served aviators so well in an earlier day.

But Chet was glad to see his instruments registering once more as he approached a new world.

Even the sonoflector was recording; its invisible rays were darting downward to be reflected back again from the surface below. That absolute alt.i.tude recording was a joy to read; it meant a definite relationship with the world.

"I'll hold her at fifty thousand," he told Harkness. "Watch for some outline that you can remember from last time."

There was an irregular area of continental size; only when they had crossed it did Harkness point toward an outflung projection of land.

"That peninsula," he exclaimed; "we saw that before! Swing south and inland.... Now down forty, and east of south.... This ought to be the spot."

Perhaps Harkness, too, had the flyer's indefinable power of orientation. He guided Chet in the downward flight, and his pointing finger aimed at last at a cl.u.s.ter of shadows where a setting sun brought mountain ranges into strong relief. Chet held the ship steady, hung high in the air, while the quick-spreading mantle of night swept across the world below. And, at last, when the little world was deep-buried in shadow, they saw the red glow of fires from a hidden valley in the south.

"Fire Valley!" said Chet. "Don't say anything about me being a navigator. Wait, you've brought us home, sure enough."

"Home!" He could not overcome this strange excitement of a home-coming to their own world. Even the man who stood, pistol in hand, behind him was, for the moment, forgotten.

Valley of a thousand fires!--scene of his former adventures! Each fumerole was adding its smoky red to the fiery glow that illumined the place. There were ragged mountains hemming it in; Chet's gaze pa.s.sed on to the valley's end.

Down there, where the fires ceased, there would be water; he would land there! And the ship from Earth slipped down in a long slanting line to cushion against its under exhausts, whose soft thunder echoed back from a bare expanse of frozen lava. Then its roaring faded. The silvery shape sank softly to its rocky bed, as Chet cut the motor that had sung its song of power since the moment when Schwartzmann had carried him off--taken him from that frozen, forgotten corner of an incredibly distant Earth.

"Iss there air?" Schwartzmann demanded. Chet came to himself again with a start: he saw the man peering from the lookout to right and to left as if he would see all that there was in the last light of day.