Part 5

"A last chance, Tor! You can reach Earth on that thing. Let me contact Earth and warn them of what goes on here! Even if we die, they can send the Fleet and blast this place--"

Curt saw it was no use.

He brought his gun around fast, tried a snap shot from the waist. But Tor was faster. He swayed aside, then his own electro sent its beam.

Curt's arm went numb from wrist to shoulder, as the Martian's beam caught his gun squarely and sent it spinning from his grasp. Curt dived low, in a try for the radiant-rifle a few yards away. Again Tor blasted. A spray of molten froth from the floor sent Curt tumbling back. He poised for another try. To think of failure now was to think of death!

But he had failed. This was death!

He heard Lorine cry out, heard Jeffers cursing behind him, as a rush of feet came toward them down the corridor!

* * * * *

Jeffers was battling for his life. A score of men were converging upon them. Jovian, Martian, Earthmen alike, they had but one purpose as they rushed forward under Zemmd's mental command.

That purpose was to kill!

But it was they who died, as Jeffers swept his beam in a deadly crossfire. Lorine had retrieved the electro, and she joined the battle, crouching beside Jeffers in the narrow doorway. Luckily it offered a measure of protection. A few of these men were armed. Beams slashed and glanced from the walls. In a matter of seconds the place was a hell of heat and blinding light.

Tor was intent upon the Tele-Magnum now. Curt sprang for the radiant-rifle, came up with it, whirled to join the battle. But already the men were falling back out of range! They left four of their dead upon the corridor floor.

In the brief respite Curt remembered Landreth, and the _Energon-form_. The same thing was happening now! The bodies coalesced with an inner aura of electric-blue. Four _Energons_ emerged swiftly and hung poised, spinning, crackling with angry radiance. Then they darted forward.

"Don't let them touch you!" Curt hurled Lorine aside, sprang forward with rifle upraised. Before he could touch the firing stud, the _Energons_ were tumbling back, wildly--as if in panic!

Curt stared. It wasn't his weapon they feared--

Then Curt knew!

_It was Tor Ekkov's voice behind him, sending his strident, high-pitched aria into the telector-beam to Mars. Sound! These things feared super-sonic sound!_

Lorine screamed, clutched at Curt's arm.

Far down the corridor, reaching almost from wall to wall, the huge bulk of the Zemmd itself sped toward them. Streamers of angry violet splashed before it, illuminating the scene. The Zemmd's own men tumbled pell-mell out of the way.

The four smaller _Energons_ sped toward the parent bulk, touched, and merged. But the Zemmd never paused. Tor's high-pitched tune seemed not to affect it!

A heavy potential rose crackling from the walls. Lorine crumpled and went down. Jeffers, reeling upon his feet, still blasted with the electro but to no avail. Part of the potential washed upon Curt and sent him staggering....

Curt hurled himself back into the room, jabbed the rifle at Tor before the Martian knew what was happening.

"Sing, damn you, keep singing! Send your song to Mars! You were right after all!"

Tor's eyes went wide, but he needed no urging. He sang! The Martian sibilants were meaningless to Curt, nor did he care. Tor's voice reached the higher octaves, far higher than any operatic star of Earth! Down the scale, then up, and up, endlessly, Tor sang his message to Mars. It took on a savage note, something of the pagan was in it--and something of fright.

For now it was Curt who had gone mad with fanatical purpose!

"Sing, damn you, or I'll blast you where you stand." He reached to Tor's side and lifted the electro. He reached to the Tele-panel and fumbled at the controls.

Suddenly the sound amplified a thousand-fold. It flooded the room, reverberating, rebounding into the corridor from wall to wall, as selenic cells poured additional power into the instrument.

"Sing!" Curt shouted. And Tor nodded. Sanity seemed to come back to him, and he realized what was happening.

Curt hurried to the corridor. Already the Zemmd's potential was diminishing! The great bulk was tumbling back, trying to escape the waves of strident sound that washed upon it.

Now Curt could _feel_ the shrieking crescendo, like a file rasping over naked nerve-ends. And the Zemmd seemed to disintegrate! The color died away. It broke apart into hundreds of the smaller _Energon_ shapes.

They were dull and disorganized now, moving aimlessly, crashing into the walls where they clung, then slid to the floor.

But a few of them retained their inner life-force! They came surging forward. Curt threw up the radiant-rifle, spread a swath of disintegrant power that sent them buffeting back. Gradually they blanked out, until nothing moved in the length of corridor. The Zemmd's men had long since vanished from the scene.

* * * * *

It was over in minutes. Behind Curt came a harsh roar, then a crash of tubes and metal as the Tele-Magnum failed under the overload of power. But Tor still sang.

Curt stepped warily forward, touched one of the grayish translucent shapes. It was warm. A decided shock, more than electrical, went through his arm.

"These things aren't finished yet! We've got to hurry!" He stared at Lorine. "What happened to Jeffers?"

She shook her head. Horror was still mirrored on her face. But Jeffers was gone! Somehow he had managed to make his way out!

All weariness vanished, as Curt raced back through the corridors with Lorine hurrying after him. He had a chill premonition of what Jeffers was up to!

A deathly silence settled over them. Tor's singing had stopped. Not until they reached the lifts did Curt notice that Tor had caught up with them. The little Martian was deathly pale but his eyes fever-bright, as he shook his head drunkenly and clutched at his throat.

Curt paid him no heed now. They tumbled into one of the cars. A propulsion beam hummed, and they rose swiftly toward the upper compound.

Jeffers was there, battling his way past a score of the Zemmd's men. But there was a great difference in these men now. They seemed disorganized and aimless without the co-ordinating, driving power of the Zemmd!

Jeffers was heading toward a hangar-like building. The spaceship with the Frequency Tuner! The man's scheme was obvious now; he had given up on Lorine, decided to try it alone!

Curt hurled himself forward, and a path opened for him as the men scurried to cover before the blast of the radiant-rifle. At all costs he must reach Jeffers--

He was too late. Already Jeffers had reached the building fifty yards away. He fumbled at the door, then disappeared. Curt was there seconds later. A gorge of despair rose in him, as he found the door barred from the inside.

There might still be time! Jeffers would have to find the secret of the Electronic Curtain reaching above them. Frantically, Curt blasted at the door. The metal resisted stubbornly, but gradually it began to melt away.

Then, from within, came a smooth droning sound. It increased in tempo. The building trembled against the full reverberant power. The Frequency Tuner! Jeffers was going to try to drive _through_ the Electronic Curtain.

Curt realized his danger, and whirled away. The building smashed apart like an eggshell, hurling debris in all directions. Curt plummeted forward, caught a glimpse of the silver spacer streaking obliquely up on the whining power of the Tuner....

But it wasn't enough! It struck the Curtain and penetrated part way, and there it dangled. There came a scintillant hell of fire and flaming metal. In seconds, the spacer's hull became cherry red and then white. Huge molten blobs of it dripped down, then an explosion sent them scattering across the compound.

What was left of the spacer came slipping out of the gaping rent in the Curtain. Gravity took it. It fell in a fiery tangle of wreckage.

Curt was scarcely aware that his legs propelled him away from the scene.

He caught sight of Lorine and Tor Ekkov, and hurried toward them. They huddled in a doorway and looked out upon the scene. Flames crackled up from a few of the buildings. None of the other men were in sight; they had scurried somewhere to safety.

"There went our last chance! Jeffers fixed everything!"

Curt's voice was a well of bitterness. These _Energon_ forces weren't finished by any means, and Curt knew it. Their work would go on....

But his mission for DeHarries was finished. The secret of this place was still secret.

The fate of the Federation had rested upon Curt's shoulders, and he had failed.

* * * * *

As if in answer, a blaze of violet light appeared far across the compound. It was the Zemmd again!--a smaller entity now, but Curt knew it would increase in power as more and more of the _Energons_ revived to join it!

It moved slowly, as if searching. _Searching for the Curtain--and Lorine._ It disappeared, appeared again, and once more vanished from sight.

"No use fighting that thing." Curt looked down at his hands, then laughed bitterly. He had lost the radiant-rifle somewhere. Even his electro was gone. "Maybe if we keep out of sight, it'll think we perished in the spaceship!"

"Curt!" Lorine's huddled figure came suddenly erect, she stood taut with excitement. Then they all heard the sound. Somewhere overhead, but coming nearer. The sound of a spacer!

It sped past the broken rent in the Curtain a hundred feet above. It returned, braked, hovered on underhull repulsion beams. Then it eased through the hole in the Curtain with little room to spare, trailing part of the K'Yarthan fog with it.

Already Curt was racing toward the spacer, as it settled down. A man stepped from the lock, others crowding behind him.

"Back! Back there, you!" The man levelled a deadly power-rapier at Curt. "Who are you, and what is this place?"

"Never mind who we are," Curt grated, "lift us out of here!" He recognized the Imperial Venus Emblem on the man's tunic.

"We were Tele-casting, and a strange beam cut into our etheric channel! The Empress Aladdian ordered that it be traced. Our directional-finders brought us here." The Venusian Guard stared around at the flaming holocaust.

"Man, if you value your lives, get us in that ship and lift gravs!"

Something of Curt's urgency caught at the man. He nodded, turned and gave swift orders. The radiant bulk of the Zemmd came into sight again and Curt saw it speeding, whirling toward them.

They tumbled into the ship. The lock closed, and seconds later they were lifting up, carefully, through the Curtain. There the spacer poised. The Venusian stared through the under ports at the blazing, angry bulk of the Zemmd.

Something of the truth mirrored in the man's eyes as he turned to Curt.

"Shall we try blasting it? We have neutros and Ingrams! We have--"

"No! It'll take super-sonic weapons to completely destroy these things. Powerful ones. Take me to Aladdian! I must contact Co-ordinator DeHarries of Earth."

* * * * *

Tor Ekkov paced endlessly, as they sped toward the hospitable continents of Venus. His glorious voice was gone, but his eyes had come alive and vibrant. He knew he'd soon return to his own people.

But Lorine ... she was a forlorn and shattered figure. Her face had gone tragic, especially at the mention of Earth.

"You're still thinking of what Jeffers told you?" Curt said. "Yes, Lorine, I'll have to take you back to Earth. But I can get absolute amnesty for you now. I shall demand it! And there are other reasons, Lorine. There are reasons--"

A tightness in his throat made his voice sound strange.

She whispered, "Yes?"

Curt drew her to him, and she was happy in his arms.