Toller stared at the yellow-hooded body without moving for perhaps ten minutes, trying to understand how he was to deal with the pain of loss.

Leddravohr has done this, he thought. This is the harvest I reap for allowing the monster to stay alive. He abandoned my brother to the ptertha!

The foreday sun was still low in the east, but in the total absence of air movement the rocky hillside was already beginning to throw up heat. Toller was torn between passion and prudence — the desire to run to his brother’s body and the need to remain at a safe distance. His blurred vision showed something white gleaming on the sunken chest, held in place by the waistcord of the grey robe and one slim hand.

Paper? Could it be, Toller’s heart speeded up at the thought, an indictment of Leddravohr?

He took out the stubby telescope he had carried since boyhood and directed it at the white rectangle. His tears conspired with the fierce brilliance of the image to make the scrawled words difficult to read, but at length he received Lain’s final communication: PTERTHA FRIENDS OF BRAK. KILL US BECAU WE KILL BRAK. BRAK FEED PTERTH. IN RETURN P PROTEC B. CLEAR-›PINK-›PURPLE P EVOLV TOXINS. WE MUS LIVE IN HARMONY WITH B. LOOK TO SKY

Toller lowered the telescope. Somewhere under the thundering turmoil of his grief was the realisation that Lain’s message had a significance which reached far beyond the present circumstances, but for the present he was unable to relate to it. Instead he was overwhelmed by a baffled disappointment. Why had Lain not used the dregs of his mental and physical energy to accuse his murderer and thus pave a straight path for retribution? After a moment’s thought the answer came to Toller, and he almost managed to smile with affection and respect. Lain, even in death, had been the true pacifist, far removed from thoughts of revenge. He had withdrawn his personal light from the world in a manner befitting his way of life — and Leddravohr still endured.…

Toller turned to walk across the slope to where the sergeant was waiting with the two bluehorns. He was fully in control of himself and there were no longer any tears to interfere with his vision, but now his thoughts were dominated by a new question which was raking his brain with the force and persistence of waves clawing at a beach.

How can I live without my brother? The heat reflected from slabs of stone pressed against his eyes, entered his mouth. It’s going to be a long hot day, and how am I going to live through it without my brother?

“I grieve with you, captain,” Engluh said. “Your brother was a good man.”

“Yes.” Toller stared at the sergeant, trying to suppress his feelings of dislike. This was the man who had been formally entrusted with Lain’s safety, and who remained alive while Lain was dead. There was little the sergeant could have done against ptertha in this kind of terrain, and according to his story he had been dismissed by Leddravohr; and yet his presence among the living was an affront to the primitive in Toller’s character.

“Do you want to go back now, captain?” Engluh showed no signs of being discomfited by Toller’s scrutiny. He was a hardlooking veteran, undoubtedly skilled in the art of preserving his own skin, but Toller could not judge him as being untrustworthy.

“Not yet,” Toller said. “I want to find the bluehorn.”

“Very good, captain.” A flickering in the depths of the sergeant’s brown eyes showed his awareness of the fact that Toller had not fully accepted Prince Leddravohr’s terse account of the previous day’s events. “I’ll show you the path we took.”

Toller mounted his bluehorn and rode behind Engluh as they worked their way up the hill. About halfway to the top they came to an area of laminated rock bounded on its lower edge by an accumulation of flakes. The remains of the bluehorn lay on the loose material, already stripped to a skeleton by multipedes and other scavengers. Even the saddle and harness had been shredded and gnawed in places. Toller felt a coolness on his spine as he realised that Lain’s body would have suffered a similar fate but for the ptertha poison in the tissues. His bluehorn had begun to toss its head and behave nervously, but he guided it closer to the skeleton and frowned as he saw the fractured shinbone. My brother was living when that happened — and now he’s dead. As the pain raged through him with renewed forced he closed his eyes and tried to think about the unthinkable.

According to what he had been told, Sergeant Engluh and the other three soldiers had ridden to the west entrance of Skyship Quarter after being dismissed by Leddravohr. They had waited there for Lain and had been astonished to see Leddravohr returning alone.

The prince had been in a strange mood, angry and jovial at once, and on seeing Engluh was reported to have said, “Prepare yourself for a long wait, sergeant — your master disabled his mount and now he is playing hide-and-seek with the ptertha.” Thinking it was expected of him, Engluh had volunteered to gallop back to the hill with a spare bluehorn, but Leddravohr had said, “Stay where you are! He chose to play a dangerous game with his own life — and that is no sport for a good soldier.”

Toller had made the sergeant repeat his account several times and the only interpretation he could place on it was that Lain had been offered transportation to safety, but had wilfully elected to flirt with death. Leddravohr was above the need to lie about any of his actions — and still Toller was unable to accept what he had been told. Lain Maraquine, who had been known to faint at the sight of blood, would have been the last man in the world to pit himself against the globes. Had he wanted to take his life he would have found a better way — but in any case there had been no reason for him to commit suicide. He had had too much to live for. No, there was a mystery central to what had happened on the barren hillside on the previous day, and Toller knew of only one man who could clear it up. Leddravohr may not have lied, but he knew more than.…

“Captain!” Engluh spoke in a startled whisper. “Look over there!”

Toller followed the line of his pointing finger to the east and blinked as he saw the unmistakable dark brown shape of a balloon lifting into the sky above Ro-Atabri. A few seconds later it was joined by three others climbing in close formation, almost as though the mass ascent to Overland was beginning days ahead of schedule.

Something has gone wrong, Toller thought before he was stricken by a sense of personal outrage. The death of Lain would have been more than enough to contend with on its own, but to that had been added aggravating doubt and suspicion — and now skyships were rising from the Quarter in contravention of all the rigid planning that had gone into the migration flight. There was a limit to how much his mind could encompass at a single time, and the universe was unfairly choosing to disregard it.

“I have to go back now,” he said, urging his bluehorn into motion. They rode down the hill, rounded a briar-covered shoulder and reached the open slope where Lain’s body lay. The unrestricted view to the east showed that more balloons were rising from the line of enclosures, but Toller’s gaze was drawn to the dappled sweeps of the city beyond. Columns of dark smoke were rising from the central districts.

“It looks like a war, captain,” Engluh said in wonderment, rising in his stirrups.

“Perhaps that’s what it is.” Toller glanced once towards the inert anonymous shape that had been his brother — You will live in me, Lain — then spurred his mount forward in the direction of the city.

He had been aware of the growing restlessness among Ro-Atabri’s beleaguered population, but he found it hard to imagine how civil disturbances could have any real effect on the ordered course of events within the Quarter. Leddravohr had installed army units in a crescent between the skyship base and the edge of the city itself, and had seen to it that they were controlled by officers he could trust even in the unique circumstances of the migration. The commanders were men who had no personal wish to fly to Overland and were stubbornly committed to preserving Ro-Atabri as an entity, come what may. Toller had believed the base to be secure, even in the event of full-scale riots, but the skyships were taking off long before their appointed time.…