close pass of the likeliest prospects and decelerate only if Haslam’s sensors or Doctor Prilicla’s empathy say it is worth doing so. Haslam, stay on the sensors and pick out a few more possibilities for us to look at once we’ve checked the first three. And continue searching the radio frequencies in case a survivor is trying to attract our attention in that fashion, and keep an eye on your scope in case it is trying to flash a light at us.”

As Conway was leaving the Control Deck to rejoin his medical team aft, Haslam said in a quiet, respectful voice, “I’ve only got two eyes, sir, and they don’t swivel independently …

One hour and fifty-two minutes later they passed heartstoppingly close to the first piece of wreckage. The sensors had already reported negatively on it-no organic material present other than structural plastic trimming panels and furniture, no pockets of atmosphere that might have contained a living entity. When they tried to put a tractor beam on it to check its spin, the whole mass began to fly apart and they had to take violent evasive action.

They caught up with the next piece in less than an hour. They had to decelerate and return to it, because the sensors reported small pockets of atmosphere inside the wreckage and organic material of a non-structural but not necessarily still-living kind. This time they did not risk trying to check its spin in case the loose mass of wreckage fell apart and the potentially life-giving pockets of air were lost to space. Instead, they set the sensor and vision recorders going during their slow, careful and extremely close approach. The close approach was for Prilicla’s benefit, but the empath reported apologetically that none of the organic material was alive.

They had three hours to study the recordings before reaching the third piece of wreckage, which was the largest and most promising to be detected. In the process they learned quite a lot about the design philosophy of the alien ship-builders from the way the structural members and bulkheads had been twisted apart by the accident. The dimensions of the corridors and compartments gave an indication of the size of the life-forms that had crewed the ship. They had glimpses of things that looked like thick pieces of manycolored fur trapped and partially hidden in the wreckage. It might have been floor covering or bedding, except that a few of the pieces were restrained by webbing and many of them showed patches of reddish brown, which looked very much like dried blood.

“Judging by the color of those stains,” Murchison observed as they studied one of the stills on the Casualty Deck repeater, “the chances are pretty good that they are warm-blooded oxygen-breathers. But do you think anyone could survive a disaster like that?”

Conway shook his head but tried to sound optimistic. “The staining on the fur does not appear to be associated with lacerations or punctured wounds of the kind suffered through violent deceleration or collision when the restraining body harness becomes deeply embedded in the body it was meant to protect. From these pictures it is impossible to tell which end of the body is which, but the staining seems to be located in the same areas of all the bodies. This suggests explosive decompression and the exiting of body fluid through natural openings, rather than massive external injury due to a sudden deceleration or collision. None of these people was wearing spacesuits, but if any of them was fast enough or lucky enough to be wearing suits, they should have been able to survive.”

Before Murchison could reply the picture changed abruptly to show another mass of wreckage, and the excited voice of the Captain sounded from the wall speaker. “This looks like the best bet so far, Doctor. No spin to speak of, so we can board easily, if necessary. The fog you see is not all escaped air; some of it is boil-off from the vessel’s water and hydraulic systems. If air is escaping, then there must be quite a lot of it still left on board. There is also what seems to be an emergency power circuit in use, weak and probably used for standby lighting. We may want to board this one. Is everyone ready?”

“Ready, friend Fletcher,” said the empath.

“Of course,” said Naydrad.

“We’ll be at the Casualty lock in ten minutes,” said Conway.

“Lieutenant Dodds and myself will accompany you,’ said the Captain, “in case structural or engineering problems are encountered. Ten minutes, Doctor.”

There was not a lot of room to spare in the Casualty airlock with the Captain, Dodds, Naydrad and its already inflated pressure litter, Prilicla and Conway all clinging to its deck and walls with foot and wrist magnets while they watched the approach of the wreckage. It looked like a great rectangular metal thicket shrouded in fog and surrounded by smaller clumps of metal, some of which were spinning rapidly and some of which drifted motionless. When Conway asked why this should be, the Captain turned silent in the manner of a person who has asked himself the same question and was unable to answer. They waited while the ambulance ship edged closer, passing between two of the wreckage’s madly spinning satellites, and their suit spotlights as well as those of the ship reflected off the twisted metal plating and projecting structural members. They went on waiting until the little Cinrusskin began trembling inside its spacesuit.

“Someone,” Prilicla finally managed to utter, “is alive in there.”

Of necessity, it was a hurried but very careful search, because the emotional radiation of the survivor was weak and characteristic of a mind that was becoming more deeply unconscious by the minute. With Prilicla indicating if not leading the way, the Captain and Dodds cleared a path through obstructions with their cutters or pushed away free-floating debris and tangled cable looms with their insulated gauntlets-there was, after all, a live power circuit in use. Conway followed closely behind, pulling himself along in a kind of weightless crawl through corridors and compartments whose ceilings were only four feet high.

Twice his spotlight picked out the bodies of crew-members, which he freed and pushed gently back the way they had come so that the waiting Naydrad could load them into the unpressurized section of the litter. Should the survivor need urgent surgical attention, Conway would feel much better if Murchison had a few cadavers to take apart so that she could tell him how the living one should be put together again.

He still had no clear idea of what they looked like, because the bodies had been encased in spacesuits. But the suits and underlying tissue had been ruptured by violent contact with metallic debris, and if the resulting wounds had not killed the beings, the decompression had. Judging by the shape of the spacesuits, the beings were flattened cylinders about six feet long with four sets of manipulatory appendages behind a conical section that was probably the head, and another four locomotor appendages. There was a marked thickening at what was presumably the rear section of the suit. Apart from the smaller size and number of appendages, the beings physically resembled the Kelgian race, to which Naydrad belonged.

Conway could hear the Captain muttering to himself about the spacesuited aliens as they stopped at the entrance to a compartment that retained pressure. Prilicla felt carefully with its empathic faculty for the presence of life, in vain. The survivor was located somewhere beyond the compartment, the empath said. Before the Captain and Dodds burned away the door, Conway drilled through to obtain an atmosphere sample for Murchison so that she could prepare suitable life-support for the survivor.

Inside the compartment there was light-a warm, orange light, which would give important information about the planet of origin and the visual equipment of this species. But right then it illuminated only a shambles of drifting furniture, twisted wall plating, tangles of plumbing, and aliens, some of whom were spacesuited and all of whom were dead.

The thickened section at the rear of their spacesuits, Conway saw suddenly, was there to accommodate a large, furry tail.

“This is collision damage, dammit!” Fletcher burst out. “Losing a hypergenerator wouldn’t have done all this!”

Conway cleared his throat. “Captain, Lieutenant Dodds, I know we haven’t time to gather material for a major research project, but if you see anything in the way of photographs, paintings, illustrations, anything that would give me information about the alien’s physiology and environment, take it along, please.” He picked out another alien cadaver that was not too badly damaged, noting the pointed, fox-like head and the thick, broad- striped coat that made it look like a furry, short-legged zebra with an enormous tail. “Naydrad,” he called, “here’s another one for you.”

“Yes, that must be it,” the Captain said, half to himself. To Conway he added, “Doctor, these people were doubly unlucky, and the survivor doubly lucky …

According to Fletcher, the hypergenerator failure had pulled the ship apart and sent the pieces spinning away. But in this particular place a number of the crew had survived and had managed to climb into their suits. They might even have had some warning of the approach of the second disaster-the overtaking of their section by another and equally massive piece of wreckage. When the collision occurred, the forward end of the first piece

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