The director felt as if eyes were watching his armored back as he sped down the hallway.

Damn the biologicals and their allies! he cursed within. Damn them for making us so insidiously like them… emotional, fallible and, worst of all, uncertain!

Wishing the last of the old style were already dust on their dirty, wet little planet, the director hurried away to find himself a long, cold drink.

"Six hours and ten minutes into the mission, four minutes since breakover into hyperspace…" Jason breathed into the microphone. "So far so good. I'm a little thirsty, but I believe it's just a typical adrenaline fear reaction. Allowing for expected tension, I feel fine."

Jason went on to describe everything he could see, the lights, the controls, the readings on the computer displays, his physical feelings… he went on until his throat felt dry and he found he was repeating himself.

"I'm getting up out of the observer's seat, now, to go get a drink." He slipped the recorder strap over his shoulder and unbuckled from the flight chair. There was a feeling of weight, as the techs had told him to expect. About a tenth of a g. It was enough to make walking possible. He flexed his legs and moved about the control room, describing every aspect of the experience. Then he went to the refrigerator and took out a squeeze-tube of lemonade.

Jason was frankly surprised to be alive. He knew the previous voyagers had lived several days before their unknown catastrophe struck. But they had been a lot tougher than he. Perhaps the mysterious lethal agency had taken nearly all the fifteen days of the minimum first leg of the round trip to do them in.

If so, he wondered, how long will it take to get me?

A few hours later, the failure of anything to happen was starting to make him nervous. He cut down the rate of his running commentary in order to save his voice. Besides, nothing much seemed to be changing. The ship was cruising, now. All the dials and indicators were green and steady.

During sleep period he tossed in the sleeping hammock, sharing it with disturbed dreams. He awakened several times impelled by a sense of duty and imminent danger, clutching his recorder tightly. But when he stared about the control room he could find nothing amiss.

By the third day he had had enough.

"I'm going to poke around in the instruments," he spoke into the microphone. "I know I was told not to. And I'll certainly not touch anything having to do with the functioning of the ship. But I figure I deserve a chance to see what I'm traveling through. Nobody's ever looked out on hyperspace. I'm going to take a look."

Jason set about the task with a feeling of exultation. What he was doing wouldn't hurt anything, just alter a few of the sensors.

Sure, it was against orders, but if he got back alive he would be famous, too important to bother with charges over such a minor infraction.

Not that he believed, for even a moment, that he was coming home alive.

It was a fairly intricate task, rearranging a few of the ship's programs so the external cameras-meant to be used at the destination star only-would work in hyperspace. He wondered if it had been some sort of Utilitarian gesture not to include viewing ports, or to do the small modifications of scanning electronics necessary to make the cameras work here. There was no obvious scientific reason to "look at" hyperspace, so perhaps the Utilitarian technicians rejected it as an atavistic desire.

Jason finished all but the last adjustments, then took a break to fix himself a meal before turning on the cameras. While he ate he made another recorder entry; there was little to report. A little trouble with the cryogen cooling units; they were laboring a bit. But the efficiency loss didn't seem to be anything critical, yet.

After dinner he sat cross-legged on the floor in front of the screen he had commandeered. "Well, now, let's see what this famous hyperspace looks like," he said. "At least the folks back home will know that it was an old style man who first looked out on…"

The screen rippled, then suddenly came alight.

Light! Jason had to shield his eyes. Hyperspace was ablaze with light!

His thoughts whirled. Could this have something to do with the threat? The unknown, malign force that had killed all the previous crews?

Jason cracked an eyelid and lowered his arm slightly. The screen was bright, but now that his eyes had adapted, it wasn't painful to look at. He gazed in fascination on a scene of whirling pink and white, as if the ship was hurtling through an endless sky of bright, pastel clouds.

It looked rather pleasant, in fact.

This is a threat? He wondered, dazedly. How could this soft brilliance kill?

Jason's jaw opened as a relay seemed to close in his mind. He stared at the screen for a long moment, wondering if his growing suspicion could be true.

He laughed out loud-a hard, ironic laugh, as yet more tense than hopeful. He set to work finding out if his suspicion was right, after all.

The lightship cruised on autopilot until at last it came to rest not far from its launching point. Little tugs approached gently and grappled with the black globe, pulling it toward the derricks where the inspection crew waited to swarm aboard. In the station control center, technicians monitored the activity outside.

"I am proceeding with routine hailing call," the communications technician announced, sending a metal tentacle toward the transmit switch.

"Why bother?" another mechano-cryo tech asked. "There certainly isn't anyone aboard that death ship to hear it."

The comm officer did not bother answering. He pressed the send switch. "This is Lightprobe Central to Lightprobe Nine. Do you read, Lightprobe Nine?"

The other tech turned away in disgust. He had already suspected the comm officer of being a closet Ethicalist. Imagine, wasting energy trying to talk to a month-dead organic corpse!

"Lightprobe Nine, come in. this is…"

"Lightprobe Nine to Lightprobe Central. This is Oral Witness Engineer Jason Forbs, ready to relinquish command to inspection crew."

The control room was suddenly silent. All the techs stared at the wall speaker. The comm officer hovered, too stunned to reply.

"Would you let my wife know I'm all right?" the voice continued. "And please. have station services bring over something cool to drink!"

The tableau held for another long moment. At last, the comm officer moved to reply, an undisciplined tone of excitement betrayed in his voice.

"Right away, Witness Engineer Forbs. And welcome home!"

At the back of the control room a tech wearing a globe-form body hurried off to tell the director.

A crowd of metal, ceramic, and cyborg-flesh surrounded a single, pale old-style human, floating stripped to his shorts, sipping a frosted squeeze-tube of amber liquid.

"Actually, it's not too unpleasant a place," he told those gathered around in the conference room. "But it's a good thing I violated orders and looked outside when I did. I was able to turn off all unnecessary power and lighting in time to slow the heat buildup. "As it was, it got pretty hot toward the end of the fifteen days."

The director was still obviously in a state of shock. The globular-form bureaucrat had lapsed from Utilitarian dialect, and spoke in the quasi-human tones he had grown up with.

"But… but the ship's interior should not have heated up so! The vessel was equipped with the best and most durable refrigerators and radiators we could make! Similar models have operated in the solar system and on slowboat starships for hundreds of years!"

Jason nodded. He sipped from his tube of iced lemonade and grinned.

"Oh yeah, the refrigerators and radiators worked just fine… just like the cooling plant." He gesture out the window, where the huge radiator globe could be seen drifting slowly across the sky.

"But there was one problem. Just like the cooling plant, the shipboard refrigeration system was designed to work in normal space!"

He gestured at the blackness outside, punctuated here and there by pinpoint stars.

"Out there, the ambient temperature is less than three degrees, absolute. Point your radiators into intergalactic space and virtually no radiation hits them from the sky. Even the small amount of heat in supercooled helium can escape. One doesn't need compressors and all that complicated gear they had to use in order to make cryogens on Earth. You hardly have to do more than point shielded pipes out at the blackness and send the stuff through 'em. You mechanical types get the cheap cryogens you need. But in hyperspace it's different!

"I didn't have the right instruments, so I couldn't give you a precise figure, but I'd guess the ambient temperature on that plane is above the melting point of water ice! Of course, in an environment like that the ship's radiators were horribly inefficient… barely good enough to get rid of the heat from the cabin and engines, and certainly not efficient enough-in their present design-to cool cryogens!"

The director stared, unwilling to believe what he was hearing. One of the senior scientists rolled forward.

"Then the previous crews…"

"All went mad or died when the cryo-helium evaporated! Their superconducting brains overheated! It's the one mode of mortality that is hard to detect, because it's gradual. The first effect is a deterioration of mental function, followed by insanity and violence. No wonder the previous crews came back all torn up! And autopsies showed nothing since everything heats up after death, anyway!"

Another tech sighed. "Hyperspace seemed so harmless! The theory and the first automated probes… we looked for complicated dangers. We never thought to…"

"To take its temperature?" Jason suggested wryly.

"But why look so glum!" He grinned. "You all should be delighted! We've found out the problem, and it turns out to be nothing at all."

The director spun on him. "Nothing? You insipid biological, can't you see? This is a disaster! We counted on hyperspace to open the stars for us. But it is infernally expensive to use unless we keep the ships small.

"And how can we keep them small if we must build huge, intricate cooling systems that must look out into that boiling hell you found? With the trickle of cryogens we'll be able to maintain during those weeks in hyperspace, it will be nearly impossible to maintain life aboard!