"Patching you in with a translator, Toby. You may need German this morning." His voice was sand in my skull, a dry modulation of static. "Hillary "

"On line, Dr. Nagashima," said a BBC voice, clear as ice crystal. "You do have French, do you, Toby? Hofmannstahl has French and English."

"You stay the hell out of my hair, Hillary. Speak when you're bloody spoken to, got it?" Her silence became another layer in the complex, continual sizzle of static. Hiro shot me a dirty look across two dozen consoles. I grinned.

It was starting to happen: the elation, the adrenaline rush. I could feel it through the last wisps of barbiturate. A kid with a surfer's smooth, blond face was helping me into a jump suit. It smelled; it was newold, carefully battered, soaked with synthetic sweat and customized pheromones. Both sleeves were plastered from wrist to shoulder with embroidered patches, mostly corporate logos, subsidiary backers of an imaginary Highway expedition, with the main backer's much larger trademark stitched across my shoulders the firm that was supposed to have sent HALPERT, TOBY out to his rendezvous with the stars. At least my name was real, embroidered in scarlet nylon capitals just above my heart.

The surfer boy had the kind of standard-issue good looks I associate with junior partners in the CIA, but his name tape said NEVSKY and repeated itself in Cyrillic. KGB, then. He was no tsiolnik; he didn't have that loose-jointed style conferred by twenty years in the L-5 habitat. The kid was pure Moscow, a polite clipboard ticker who probably knew eight ways to kill with a rolled newspaper. Now we began the ritual of drugs and pockets; he tucked a microsyringe; loaded with one of the new euphorohallucinogens, into the pocket on my left wrist, took a step back, then ticked it off on his clipboard. The printed outline of a jump-suited surrogate on his special pad looked like a handgun target. He took a five-gram vial of opium from the case he wore chained to his waist and found the pocket for that. Tick. Fourteen pockets. The cocaine was last.

Hiro came over just as the Russian was finishing. "Maybe she has some hard data, Toby; she's a physical chemist, remember." It was strange to hear him acoustically, not as bone vibration from the implant.

"Everything's hard up there, Hiro." "Don't I know it?" He was feeling it, too, that special buzz. We couldn't quite seem to make eye contact. Before the awkwardness could deepen, he turned and gave one of the yellow clowns the thumbs up.

Two of them helped me into the Bauhaus coffin and stepped back as the lid hissed down like a giant's faceplate. I began my ascent to Heaven and the homecoming of a stranger named Leni Hofmannstahl. A short trip, but it seems to take forever.

Olga, who was our first hitchhiker, the first one to stick out her thumb on the wavelength of hydrogen, made it home in two years. At Tyuratam, in Kazakhstan, one gray winter morning, they recorded her return on eighteen centimeters of magnetic tape.

If a religious man one with a background in film technology had been watching the point in space where her Alyut had vanished two years before, it might have seemed to him that God had butt-spliced footage of empty space with footage of Olga's ship. She blipped back into our space-time like some amateur's atrocious special effect. A week later and they might never have reached her in time; Earth would have spun on its way and left her drifting toward the sun. Fifty-three hours after her return, a nervous volunteer named Kurtz, wearing an armored work suit, climbed through the Alyut's hatch. He was an East German specialist in space medicine, and American cigarettes were his secret vice; he wanted one very badly as he negotiated the air lock, wedged his way past a rectangular mass of airscrubber core, and chinned his helmet lights. The Alyut, even after two years, seemed to be full of breathable air. In the twin beams from the massive helmet, he saw tiny globules of blood and vomit swinging slowly past, swirling in his wake, as he edged the bulky suit out of the crawlway and entered the command module. Then he found her.

She was drifting above the navigational display, naked, cramped in a rigid fetal knot. Her eyes were open, but fixed on something Kurtz would never see. Her fists were bloody, clenched like stone, and her brown hair, loose now, drifted around her face like seaweed. Very slowly, very carefully, he swung himself across the white keyboards of the command console and secured his suit to the navigational display. She'd gone after the ship's communications-gear with her bare hands, he decided. He deactivated the work suit's right claw; it unfolded automatically, like two pairs of vicegrip pliers pretending they were a flower. He extended his hand, still sealed in a pressurized gray surgical glove.

Then, as gently as he could, he pried open the fingers of her left hand. Nothing.

But when he opened her right fist, something spun free and tumbled in slow motion a few centimeters from the synthetic quartz of his faceplate. It looked like a seashell.

Olga came home, but she never came back to life behind those blue eyes. They tried, of course, but the more they tried, the more tenuous she became, and, in their hunger to know, they spread her thinner and thinner until she came, in her martyrdom, to fill whole libraries with frozen aisles of precious relics. No saint was ever pared so fine; at the Plesetsk laboratories alone, she was represented by more than two million tissue slides, racked and numbered in the subbasement of a bomb-proof biological complex.

They had better luck with the seashell. Exobiology suddenly found itself standing on unnervingly solid ground: one and seven-tenths grams of highly organized biological information, definitely extraterrestrial. Olga's seashell generated an entire subbranch of the science, devoted exclusively to the study of ... Olga's seashell.

The initial findings on the shell made two things clear. It was the product of no known terrestrial biosphere, and as there were no other known biospheres in the solar system, it had come from another star. Olga had either visited the place of its origin or come into contact, however distantly, with something that was, or had once been, capable of making the trip.

They sent a Major Grosz out to the Tovyevski Coordinates in a specially fitted Alyut 9. Another ship followed him. He was on the last of his twenty hydrogen flares when his ship vanished. They recorded his departure and waited. Two hundred thirty-four days later he returned. In the meantime they had probed the area constantly, desperate for anything that might become the specific anomaly, the irritant around which a theory might grow. There was nothing: only Grosz's ship, tumbling out of control. He committed suicide before they could reach him, the Highway's second victim.

When the towed the Alyut back to Tsiolkovsky, they found that the elaborate recording gear was blank. All of it was in perfect working order; none of it had functioned. Grosz was flash-frozen and put on the first shuttle down to Plesetsk, where bulldozers were already excavating for a new subbasement.

Three years later, the morning after they lost their seventh cosmonaut, a telephone rang in Moscow. The caller introduced himself. He was the director of the Central Intelligence Agency of the United States of America. He was authorized, he said, to make a certain offer. Under certain very specific conditions, the Soviet Union might avail itself of the best minds in Western psychiatry. It was the understanding of his agency, he continued, that such help might currently be very welcome.

His Russian was excellent.

The bonephone static was a subliminal sandstorm. The elevator slid up into its narrow shaft through the floor of Heaven. I counted blue lights at two-meter intervals. After the fifth light, darkness and cessation.