The gentle, off-center gravitational effect of centrifugal force abruptly ceased, together with the humming of the directional gyroscope. Then the ship trembled violently and suddenly, and again. A hit? No, decided the Commodore, it was Carter firing a salvo of missiles. But the use of these weapons showed that the enemy must be getting too close for comfort.
Williams' voice from the bulkhead speaker was loud, with a certain urgency.
"On course for Lorn, Skipper!"
"Mannschenn Drive on remote control," ordered Grimes. "Serressor will give the word to switch on."
Already the Doctor and the junior engineers had left the Mannschenn Drive room, making no secret of their eagerness to be out of the compartment before things started to happen. Bronson was making some last, finicking adjustments to his machinery, his heavily bearded face worried.
"Hurry up, Commander," Grimes snapped.
The engineer grumbled, "I don’t like it. This is an interstellar drive, not a Time Machine…"
Again came the violent trembling, and again, and again.
Bronson finished what he was doing, then reluctantly left his domain. Grimes turned to Serressor, who now looked as though he had become enmeshed in the web of a gigantic spider. He said, "You know the risk. . ."
"I know the risk. If I am… everted, it will be a new experience."
And not a pleasant one, thought the Commodore, looking at Mayhew. The telepath was paler than ever, and his prominent Adam’s apple wobbled as he swallowed hard. And not a pleasant one. And how could this… this non-human philosopher, who had never handled a metal tool in his long life, be so sure of the results of this tampering with, to him, utterly alien machinery? Sure, Serressor had read all the books (or his other-self in Grimes' own continuum had read all the books) on the theory and practice of Mannschenn Drive operation—but book knowledge, far too often, is a poor substitute for working experience.
"Good luck," said Grimes to the saurian and to Mayhew.
He left the compartment, carefully shut the door behind him.
He heard the whine, the wrong-sounding whine, as the Drive started up.
And then the dream-filled darkness closed about him.
XX
It is said that a drowning man relives his life in the seconds before final dissolution.
So it was with Grimes—but he relived his life in reverse, experienced backwards the long history of triumphs and disasters, of true and false loves, of deprivations and shabby compromises, of things and people that it was good to remember, of things and people that it had been better to forget. It was the very unreality of the experience, vivid though it was, that enabled him to shrug it off, that left him, although badly shaken, in full command of his faculties when the throbbing whine of the ever-precessing gyroscopes ceased at last.
The ship had arrived.
But where?
When?
Ahead in Space and Astern in Time—that was the principle of the Mannschenn Drive. But never Full Astern—or, never intentionally Full Astern. Not until now. And what of the governors that had been fitted to the machine, the flesh-and-blood governors—the human telepath and the saurian philosopher, with his intuitive grasp of complexities that had baffled the finest mathematical brains of mankind?
What of the governors? Had they broken under the strain?
And what of himself, Grimes? (And what of Sonya?)
He was still Grimes, still the Commodore, with all his memories (so far as he knew) intact. He was not a beardless youth (his probing hand verified this). He was not an infant. He was not a tiny blob of protoplasm on the alleyway deck.
He opened the door.
Serressor was still there, still entangled in the shining filaments. But his scales gleamed with the luster of youth, his bright eyes were unfilmed. His voice, as he said, "Man Grimes, we were successful!" was still a croak, but no longer a senile croak "We did it!" confirmed Mayhew, in an oddly high voice.
The telepath was oddly shrunken. The rags that had been his loin clout were in an untidy bundle about his bare feet. No, shrunken was not the word. He was smaller, younger. Much younger.
"That was the hardest part," he said. "That was the hardest part—to stop the reversal of biological time. Serressor and I were right in the field, so we were affected. But the rest of you shouldn’t be changed. You still have your long, gray beard, Commodore."
But my beard wasn’t gray, thought Grimes, with the beginning of panic. Neither was it long. He pulled a hair from it, wincing at the sudden pain, examined the evidence, (still dark brown) while Serressor cackled and Mayhew giggled.
"All right," he growled. "You’ve had your joke. What now?"
"We wait," Mayhew told him. "We wait, here and now, until Sundowner shows up. Then it’s up to you, sir."
Sundowner, thought Grimes. Jolly Swagman… Waltzing Matilda. Names that belonged to the early history of the Rim Worlds. The battered star tramps of the Sundowner Line that had served the border planets in the days of their early colonization, long before secession from the Federation had been even dreamed of, long before the Rim Worlds government had, itself, become a shipowner with the Rim Runners fleet.
Sundowner… She had been (Grimes remembered his history) the first ship to bring a cargo of seed grain to Lorn. And that was when this alternative universe, this continuum in which Grimes and his people were invaders, had run off the historical rails. Sundowner… Serressor knew his history too. The Wise One had planned this rendezvous in Space and Time, so that Grimes could do what, in his universe, had been accomplished by plague or traps, or, even, cats or terrier dogs.
"I can hear her…" murmured Mayhew distantly. "She is on time. Her people are worried. They want to get to port before their ship is taken over by the mutants."
"In this here-and-now," said Serressor, "she crashed—will crash?—in the mountains. Most of the mutants survived. But go to your control room, man Grimes. And then you will do what you have to do."
They were all very quiet in the control room, all shaken by the period of temporal disorientation through which they had passed. Grimes went first to Williams, hunched in his co-pilot’s chair. He said softly, "You are ready, Commander?"
"Ready," answered the Executive Officer tonelessly.
Then the Commodore went to sit beside his wife. She was pale, subdued. She looked at him carefully, and a faint smile curved her lips. She murmured, "You aren’t changed, John. I’m pleased about that. I’ve remembered too much, things that I thought I’d forgotten, and even though it was all backwards it was… shattering. I’m pleased to have you to hold on to, and I’m pleased that it is you, and not some puppy. …"
"I shouldn’t have minded losing a few years in the wash," grunted Grimes.
He looked at the officers at their stations—radar, gunnery, electronic radio. He stared out of the ports at the Lorn sun, its brightness dimmed by polarization, at the great, dim-glowing Galactic lens. Here, at the very edge of the Universe, the passage of years, of centuries was not obvious to a casual glance. There were no constellations in the Rim sky that, by their slow distortions, could play the part of clocks.