Ralph was eating a cold snack in Fort Forward’s command complex canteen when he received the datavise.

“Slow the assault,” Princess Kirsten told him. “I want that suicide figure reduced as low as you can practically achieve.”

“Yes ma’am. I’ll see to it. And thank you.”

“This is what you wanted?”

“We’re not here to recapture land, ma’am. The Liberation is about people.”

“I know that. I hope Acacia will forgive us.”

“I’m sure she will, ma’am. The Edenists understand us pretty well.”

“Good. Because I also want the serjeant platoons given as much breathing space between assaults as they require.”

“That will reduce the rate of advance even further.”

“I know, but it can’t be helped. Don’t worry about political and technical support, General, I’ll ensure you get that right to the bitter end.”

“Yes ma’am.” The datavise ended. He looked round at the senior staff eating with him, and gave a slow smile. “We got it.”

High above the air, cold technological eyes stared downwards, unblinking. Their multi-spectrum vision could penetrate clean through Mortonridge’s thinning strands of puffy white cloud to reveal the small group of warm figures trekking across the mud. But that was where the observation failed. Objects around them were perfectly clear, the dendritic tangle of roots flaring from fallen trees, a pulverised four-wheel-drive rover almost devoured by the blue-grey mud, even the shape of large stones ploughed up and rolled along by thick runnels of sludge. In contrast, the figures were hazed by shimmering air; infrared blobs no more substantial than candle flames. No matter which combination of discrimination filters it applied to the sensor image, the AI was unable to determine their exact number. Best estimate, taken from the width of the distortion and measuring the thermal imprint of the disturbed mud they left behind, was between four and nine.

Stephanie could feel the necklace of prying satellites as they slid relentlessly along their arc from horizon to horizon. Not so much their physical existence; that kind of knowledge had vanished along with the cloud and the possessed’s mental unity. But their avaricious intent was forever there, intruding upon the world’s intrinsic harmonies. It acted as a reminder for her to keep her guard up. The others were the same. Messing with the sight on a level which equated to waving a hand at persistent flies. Not that satellites were their problem. A far larger note of discord resonated from the serjeants, now just a couple of miles away. And coming closer, always closer. Machine-like in their determination.

At first Stephanie had ignored them, employing a kind of bravado that was almost entirely alien to her. Everybody had, once they’d reached the shelter (and dryness !) of the barn. The building didn’t amount to much, set on a gentle hillock, with a low wall of stone acting as a base for composite panelling walls and a shallow roof. They’d stumbled across it five horrendous hours after setting out from the end of the valley. McPhee claimed that proved they were following the road. By then, nobody was arguing with him. In fact, nobody was speaking at all. Their limbs were trembling from exertion, not even reinforcing them with energistic strength helped much. They’d long since discovered such augmentation had to be paid for by the body in the long run.

The barn had come pretty much at the end of their endurance. There’d been no discussion about using it. As soon as they saw its dark, bleak outline through the pounding rain they’d trudged grimly towards it. Inside there was little respite from the weather at first. The wind had torn innumerable panels off the carbotanium frame, and the concrete floor was lost beneath a foot of mud. That didn’t matter, in their state, it was pure salvation.

Their energistic power renovated it. Mud flowed up the walls, sealing over the lost panels and turning to stone. The rain was repelled, and the howl of the wind muted. Relief united them again, banishing the misery of the retreat from the valley. It was an emotion which produced an overreaction of confidence and defiance. Now, they found it possible to ignore the occasional mind-scream of anguish as another soul was wrenched from its possessed body by the peril of zero-tau. They cooperated gamely in searching round outside for food, adopting a campfire jollity as they cleaned and cooked the dead fish and mud-smeared vegetables.

Then the rain eased off, and the serjeants crunched forwards remorselessly. Food became very scarce. A week after the Liberation began, they left the barn, tramping along the melted contour line which McPhee still insisted was the road. Even living through the deluge under a flimsy roof hadn’t prepared them for the scale of devastation wrought by the water. Valleys were completely impassable. Huge rivers of mud slithered along, murmuring and burbling incessantly as they sucked down and devoured anything that protruded into their course.

Progress was slow, even though they’d now fashioned themselves sturdy hiking attire (even Tina wore strong leather boots). Two days spent trying to navigate through the buckled, decrepit landscape. They kept to the high ground, where swathes of dark-green aboriginal grass were the only relief from the overlapping shades of brown. Even they were sliced by deep flash gorges where the water had found a weak seam of soil. There was no map, and no recognizable features to apply one against. So many promising ridges ended in sharp dips down into the mud, forcing them to backtrack, losing hours. But they always knew which way to travel. It was simple: away from the serjeants. It was also becoming very difficult to stay ahead. The front line seemed to move at a constant pace, unfazed by the valleys and impossible terrain, while Stephanie and her group spent their whole time zigzagging about. What had begun forty-eight hours ago as a nine mile gap was down to about two, and closing steadily.

“Oh, hey, you cats,” Cochrane called. “You like want the good news or the bad news first?” He had taken point duty, striding out ahead of the others. Now he stood atop a dune of battered reeds, looking down the other side in excitement.

“The bad,” Stephanie said automatically.

“The legion of the black hats is speeding up, and there’s like this stupendously huge amount of them.”

“What’s the good?” Tina squealed.

“They’re speeding up because there’s like a road down here. A real one, with tarmac and stuff.”

The others didn’t exactly increase their pace to reach the bedraggled hippie, but there was a certain eagerness in their stride that’d been missing for some time. They clambered up the incline of the dune, and halted level with him.

“What’s there?” Moyo asked. His face was perfect, the scars and blisters gone; eyes solid and bright. He was even able to smile again, doing so frequently during the last few days they’d spent in the barn. That he could smile, yet still refuse to let them see what lay underneath the illusory eyeballs worried Stephanie enormously. A bad form of denial. He was acting the role of himself; and it was a very thin performance.

“It’s a valley,” she told him.

He groaned. “Oh hell, not again.”

“No, this is different.”

The dune was actually the top of a steepish slope which swept down several hundred yards to the floor of Catmos Vale, a valley that was at least twenty miles wide. Drizzle and mist made the far side difficult to see. The floor below was a broad flat expanse whose size had actually managed to defeat the massive discharges of mud. Its width had absorbed the surges that coursed out of the narrower ravines along either side; spreading them wide and robbing them of their destructive power. The wide, boggy river channel which meandered along the centre had siphoned the bulk of the tide away, without giving it a chance to amass in dangerously unstable colloidal waves.