The Hagroon had arrived at the Net Garages. I had seen their shuttles there. It was the perfect spot for an assault in force via shuttle, and due to the characteristic emanations of the Net communicator carriers, easy to pinpoint for navigation purposes.
Once there, they had marched across the empty null-time city to Intelligence Headquarters, a convenient central location from which to attack, and with plenty of dark cellar rooms—and perhaps there was also an element of sardonic humor in their choice of staging areas…
Then the troops had poured through the portal, emerged into the midnight streets of the real-time city, spewing gas—the attack the end of which I was now witnessing.
Then they had returned through the portal, crossed to their shuttles again in null time—the exodus I had just witnessed…
But why the gas attack on a city about to suffer annihilation along with the rest of the planet?
Simple: The Hagroon needed peace and quiet in which to erect the discontinuity engine—and they needed the assurance that the infernal machine would remain undisturbed for the necessary time to allow them to pass back through their portal into null time, regain their shuttles, and leave the doomed A-line. By gassing the city, they had ensured their tranquillity while they perpetrated the murder of a universe.
Because it was more than a world they killed. It was a planet, a solar system, a sky filled with stars, to the ends of conceivable space and beyond—a unique, irreplaceable aspect of reality, to be wiped forever from the face of the continuum, because one world, one tiny dust-mote in that universe posed a possible threat to Hagroon safety. It was an adominable plot—and the moments during which I could take action to thwart it were fast slipping away. Somewhere, at this moment, a crew was at work, preparing the doomsday device. And if I delayed, even for minutes, in finding it—it would be too late or (too early!). The machine would be separated into its component parts, carried away to the shuttles by backward-walking men, transported out of range—
I had to find the engine—now!
I looked around. Hagroon laden with empty canisters were still backing away along the corridor. Their officers waved their arms, mouths moving behind faceplates. One individual, helmetless, caught my attention. He came from the opposite direction along the narrow hall, stepping briskly up to the Hagroon directing the canister operation. Two rank-and-file Hagroon preceded him. They turned away, joined a group plucking empty canisters from a heap and fitting them on their backs. The helmetless one talked to the officer; both nodded, talked some more; then the former backed away down the dark hall—away from the stair. I hesitated a moment, then followed.
He backed off fifty feet, turned into a storeroom much like the one in which the portal had been erected. There were four other Hagroon there, crouching around a heavy tripod on which a massive construction rested, its casing lying on the floor to one side.
Luck was with me. I had found the discontinuity engine.
The next step was clear to me in the same instant that I saw the engine. As two of the Hagroon paused, staring with comically puzzled expressions, I went to the stand, planted my feet, gripped the massive casing, and lifted. It came away easily. My slightly accelerated time rate, although reversed, gave me an added quota of brute strength. I stepped back, hugging the horror device to my chest, feeling the buzz of its timer—and to my blank amazement, saw it still resting where it had been—while I held its counterpart in my hands. The Hagroon technicians were working away, apparently undisturbed. But then, I hadn’t yet appeared, to create paradox before their startled eyes…
I turned to the door, made my way along the corridor, climbed the steps, set off at the fastest dog trot I could manage for the Net Garages.
I made it in twenty minutes, in spite of the awkward burden, forcing myself to ignore the gas attack going on all around me. Suited Hagroon clumped backward through the well-lit streets under a vague cloud of brownish gas that seemed to slowly coalesce, drawing together as I watched. I half-ran, half-walked, shifting my grip on the heavy casing, sweating heavily now inside the suit. The gas was all around me, and I hoped the seals of my garment were as secure as Dzok had assured me they were.
At the garages, a few morose-looking Hagroon loitered about the parked shuttles, peering out through the wide doors toward the sounds of action in the city streets. I passed them unnoticed, went to the last shuttle in line—the same machine I had ridden once before. I knew it had preset controls, which would automatically home it on its A-line of origin—the Hagroon world. I pulled open the door, lowered my burden to the grey metal floor, pushed it well inside, then checked the wall clock. Dzok and I had calculated that the engine had gone into action at two A.M. precisely. It was now ten forty-five; three hours and fifteen minutes until M minute.
And the transit of the shuddle from the Zero-zero line to the Hagroon line had taken three hours and twenty-five minutes.
I had ten minutes to kill…
The discontinuity engine was already counting down toward its moment of cataclysmic activity—the titanic outpouring of energy which would release the stasis which constituted the fabric of reality for this line of alternate existence. I had plucked it from the hands of its makers just as they were completing their installation. When the time came, it would perform. The shuttle was the problem now. I climbed inside, looked over the controls. They, at least, were simple enough. A trip wire, attached to the main field switch…
I went back out, found a length of piano wire on a workbench at one side of the garage, secured it to the white painted lever that controlled the shuttle’s generators, led the wire out through the door. Five minutes to go, now. It was important to get the timing as exact as possible. I watched the hands of the clock move back: ten thirty-four; ten thirty-three; ten thirty-two; ten thirty-one. There was a faint vibration from the shuttle…
I closed the door carefully, checked to be sure the wire was clear, then gripped it, gave it a firm pull. The shuttle seemed to waver. It shimmered, winked for an instant—then sat, solid and secure, unmoving. I let out a breath; the example of the engine had forewarned me. The results of my actions on external objects weren’t visible to me, but I had sent the shuttle on its way. This was its past reality I saw before me now.
Chapter Fifteen
Back in the street, the attack was in full swing. I saw a man lying in the gutter rise, like a dummy on a rope, clutch at his throat, run backwards into a building—a corpse risen from the dead. The brown cloud hung low over the pavement now, a flat stratum of deadly gas. A long plume formed, flowed toward a Hagroon, whipped into the end of the hand-held horn of his dispenser. Other plumes shaped up, flowed toward other attackers. I was watching the gas attack in reverse—the killers, scavenging the streets of the poison that would decimate the population. I followed them as the poisonous cloud above gathered, broke apart, flowed back into the canisters from which it had come. I saw the invaders, laden now, slogging in their strange reverse gait back toward the dark bulk of Intelligence HQ. And I followed, crowding with them along the walk, through the doors, along the corridor, down the narrow steps, back to the deserted storeroom where they poured in a nightmare stream through the shining disk, back to null time and their waiting shuttles.