in.' There was almost an edge of anger in his thoughts.
'Don't you worry, old man,' said Herb. 'We'll save the universe. I don't know how in hell we'll do it, but we'll save it for you.”
'Not for us,' the Engineer corrected, 'but for those others. For all life that now exists within the universe. For all life that in time to come may exist within the universe.”
'There,' said Gary, hardly realizing that he spoke aloud, 'is an ideal big enough for any man.”
An ideal. Something to fight for. A spur that kept Man going on, striving, fighting his way ahead.
Save the universe for that monstrosity in the glass sphere with its shifting vapors, for the little, wriggling, slug-like things, for the mottled terror with the droopy mouth and the glint of humor in his eyes.
'But how?' asked Tommy. 'How are we going to do it?”
Kingsley ruffled at him. 'We'll do it,' he thundered.
He wheeled on the Engineer. 'Do you know what kind of energy would exist within the inter-space?' he asked.
'No,' said the Engineer, 'I cannot tell you that. Perhaps the Hellhounds.
But that's impossible.”
'Is there any other place?' asked Gary in a voice cold as steel. 'Anyone else who could tell us?”
'Yes,' said the Engineer. 'There is one other race. I think that they might tell you. But not yet. Not yet. It is too dangerous.”
'We don't care,' said Herb. 'We humans eat up danger.”
'Let us try it,' said Gary. 'Just a couple of us. If something happened, the others would be left to carry on…”
'No,' said the Engineer, and there was a terrible finality in the single thought.
'Why can't we go out ourselves and find out?' asked Herb. 'We could make a little universe just for ourselves. Float right out into this fifth-dimension space and study the energy that we find.”
'Splendid,' purred Kingsley. 'Absolutely splendid. Except there isn't any energy yet. Won't be until the two universes rub and then it will be too late.”
'Yes,' said Caroline, smiling at Herb, 'we have to know before the energy is produced. When the universes rub, it will flood in upon us in such great quantity that we'll be wiped out almost immediately. The first contracting rush of space and time will engulf us. Remember, we're just inside the universal rim.”
'I do not entirely understand,' said the Engineer. 'You spoke of making a universe. Can you make a universe? Bend space and time around a predetermined mass? I am afraid you jest. That would be difficult.”
Gary started. Was it possible that Caroline had done something an Engineer thought impossible to do? Standing here, it seemed so simple, so commonplace that space-time could be bent into a hypersphere. Nothing wonderful about it. Just something to be slightly astonished at and argued about. Just a few equations spread upon a sheet of paper.
'Sure we can,' bellowed Kingsley. 'This little lady has it figured out.”
'The little lady,' commented Herb, 'is a crackajack at figures.”
The Engineer reached out his hand to take the sheet of calculations that Kingsley was handing to him. But as he reached out his arm little red lights began to blink throughout the laboratory and in their ears sounded a shrill, high-pitched whine — a whine that held a note of sinister alarm.
'What's that?' yelled Kingsley, dropping the sheet.
The thought of the Engineer came to them as calm as ever, as absolutely devoid of emotion as it bad always been.
'The Hellhounds,' he said 'The Hellhounds are attacking us.”
As he spoke, Gary watched the sheet of paper flutter to the floor, a little fluttering sheet that held the key to the riddle of the universe scratched upon it in the black scrawlings of a soft-lead pencil.
The Engineer moved across the laboratory to a panel. His metallic fingers reached out, deftly punched at studs. A wall screen lighted up and on it they saw the bowl of sky above the city. Ships were shooting up and outward, great silver ships that had grim lines of power about them. Up from the roofs they arrowed out into space, squadron after squadron, following a grim trail to the shock of combat. Going out to meet the Hellhounds.
The Engineer made adjustments on the panel and they were looking deeper into space, far out into the darkness where the atmosphere had ended. A tiny speck of silver appeared and rapidly leaped toward them, dissolving into a cloud of ships. Thousands of them.
'The Hellhounds,' said the Engineer.
Gary heard Herb suck in his breath, saw Kingsley's hamlike hands clenching and unclenching.
'Stronger than ever,' said the Engineer. 'Perhaps with new and more deadly weapons, perhaps more efficient screens. I am afraid, so very much afraid, that this means the end of us… and of the universe.”
'How far away are they?' asked Tommy.
'Only a few thousand miles now,' said the Engineer. 'Our alarm system warns us when they are within ten thousand miles of the surface. That gives us time to get our fleet out into space to meet them.”
'Is there anything we can do?' asked Gary.
'We are doing everything we can,' said the Engineer.
'But I don't mean you,' said Gary. 'Is there anything the five of us can do? Any war service we can render you?”
'Not now,' said the Engineer. 'Perhaps later there will be something. But not now.”
He adjusted the screen again and in it they watched the defending ships of the Engineers shooting spaceward, maneuvered into far-flung battle lines — like little dancing motes against the black of space.
In breathless attention they kept their eyes fixed on the screen, saw the gleaming points of light draw closer together, the invaders and the defenders. Then upon the screen they saw dancing flashes that were not reflections from the ships, but something else — knifing flashes that reached out, probed and stabbed and slashed, like a searchlight's beam cuts into the night. A tiny pinpoint of red light flashed momentarily and then went out. Another flamed, like lightning bugs of a summer night, except the flash was red and seemed filled with a terrible violence.
'Those flashes,' breathed Caroline. 'What are they?”
'Exploding ships,' said the Engineer. 'Screens break down and the energy drains out and then an atomic bomb or ray finds its way into them.”
'Exploding ships,' said Gary. 'But whose?”
'How can I tell?' asked the Engineer. 'It may be theirs or ours.”
Even as he spoke a little ripple of red flashes ran across the screen.
Chapter Ten
Half the city was in ruins, swept and raked by the stabbing rays that probed down from the upper reaches of the atmosphere, blasted by hydrogen and atomic bombs that shook the very bedrock of the planet and shattered great, sky-high towers of white masonry into drifting dust. Twisted wreckage fell into the city from the battle area, great cruisers reduced to grotesque metal heaps, bent and burned and battered out of all semblance to a ship, scorched and crushed and flattened by the energy unloosed in the height of battle.
'They have new weapons,' said the Engineer. 'New weapons and better screens. We can hold them off a little longer. How much longer I do not know.”
In the laboratory, located in the base of one of the tallest of the skyscrapers in the great white city, the Engineers and the Earthlings had watched the battle for long hours. Had seen the first impact of the fleets, had watched the first dogfight out at the edge of atmosphere, had witnessed the Hellhounds slowly drive the defenders back until the invaders were within effective bombardment distance of the city itself.
'They have a screen stripper,' said the Engineer, 'that is far more effective than anything we have ever seen. It is taking too much of our ships' energy to hold up their screens under this new weapon.”
In the telescopic screen a brilliant blue-white flash filled all the vision-plate as a bomb smashed into one of the few remaining towers. The tower erupted with a flash of blinding light and disappeared, with merely the ragged
