Well, look at the pretty horses now.

From the start the place had seemed idyllic: warm balmy sunshine, wild plums scattered below the trees fringing the forest—fed upon by small lemurs who maybe preferred the slightly decayed fruit for its intoxicant effect—amid lush green grass scattered with giant daisies and enough dry wood with which to make a fire for the coming night. But before she had a chance to set about gathering some, a herd of miniature horses galloped into view—scattering the lemurs in panic. Polly knelt in the shadow of a tree to eat the plums she had collected while she watched the cute creatures’ antics. Then it had appeared, and now she crouched behind the same tree, the taser in her left hand and the automatic in her right.

You’re way back now. Bastards like that died out about forty million years back.

The monster hurtled in on the pastoral scene with a scream like a klaxon. Swinging and clashing its parrot beak, it eviscerated one of the little horses, then took the head off another, and stamped its talon down on a third, while the rest of the herd fled. It began eating the pinioned animal, tearing it in half and tilting back its head to gobble down the quivering hindquarters. In moments it finished the first horse, then it strode across to another, pecking up a decollated head on the way. Before feasting on its third victim, it paused and shat out a spray of white excrement.

I think it’s getting full now.

So it appeared, for the monstrous bird, after eating the head and forelegs of the third horse, was pecking at the rest in what now seemed a desultory manner. After a moment it gave up completely, scraped at the ground like a chicken, before letting out that klaxon squawk again and moving away.

And that was only a small one.

Polly was aghast, for the horrible creature had stood higher than herself and its killer beak was the size of a bucket.

It’s called Gastornis, Nandru explained.

Seeing the bird was now some hundred metres away, Polly began to move out from under cover.

Wouldn’t it be better to stay in the trees?

Ignoring this advice, she glanced all around to make sure there were no other unpleasant surprises in the offing, then ran over to where the bird had been feeding.

Are you insane?

Stooping, Polly grabbed a bloody chunk of the last little horse and ran for cover again.

‘Waste not want not, as my mother always used to say,’ she sang, running still deeper into the forest.

Later, with her stomach full of roast horse, she gazed out from her camp and noticed how her fire’s glow reflected on eyes out there. After throwing a bone out towards them, she could hear things squabbling in the darkness over it. But at least they sounded small.

The nightmare bore the shape of a man, but a tall, long-limbed man in whom the ranginess of the Heliothane had been taken to its extreme. It had no face—its head was a slightly beaked, utterly featureless ovoid, of the same shiny beetle-black appearance as the majority of its naked body. However, as if this was not strange enough, the black carapace revealed a network of hyaline veins and ribs, so that, when the light caught the network, it looked as if something horribly skeletal stood there.

‘A woman used a semi-AI prognostic program to predict the future development of human DNA, and on the basis of that started recombination experiments on her children. In her terms, her first experiment was a failure, though the offspring survived. Cowl was not a failure, so there is much speculation as to what those terms of hers were.’

Tack flinched as Cowl started to walk towards him, but the dark being was then frozen mid-stride as Pedagogue continued lecturing.

‘We don’t know what external pressures were input, because DNA has no purpose in itself other than its own survival and procreation, so intelligence or physical strength are only increased should they have a direct bearing on that. Should the survival of human DNA entail you needing to lose your big brains and filter food out of the soil, you would all become worms. It can only be supposed that her program posited a future where the highest levels of intelligence, ruthlessness, speed and strength were required. Cowl killed his own mother while in her womb, thereafter escaping by internal caesarean much like a chick escaping from the egg with its beak spur.’

‘But he became one of the Heliothane,’ Tack stated. The information was now just there, in his mind. He saw how Cowl’s survival had initially depended on the Heliothane, how he had deliberately become a very valuable member of that society. It was not so difficult—ruthlessness and intelligence being much admired. The misjudgment had killed many. One of them a top scientist called Astolere—Saphothere’s sister.

‘I see,’ said Tack woodenly.

And see he did. He saw Callisto, a moon of Jupiter, exploding, with the blast contained in some unseen barrier and the moon just winking out of existence. Four hundred million Heliothane gone in less time than it took to draw breath.

‘Cowl, having made his alliance with the Umbrathane, and passing on much of his research, caused a temporal anomaly on Callisto, where his research facility was based, putting a picosecond future version of that moon in exactly the same place as the original. The physical composite of the two moons, forced to exist however briefly in the same place, went in a fusion explosion, the energy generated thereby powering his flight, and that of the Umbrathane fleet, into the past.’

‘And I am supposed to kill this… creature?’

‘Yes, that is your task.’

Back aboard the virtual ship, Tack was bathed in incandescence. The screens now revealed a side view of the sun tap. It was a leviathan wood planer shaving the fiery surface of the sun, raft-like at its two extremes but humped in the middle. The view was filtered—it would have incinerated him otherwise. Then, suddenly, he was gazing upon the vast cliff that was just one side of the tap. This close it seemed to extend to infinity in every direction, beyond planetary scale—immensity impossible to encompass. He blinked and drew his attention away from it, studying his closer surroundings. The inside of the ship had become a furnace: plastics were beginning to smoke, coatings were peeling from metal surfaces, spots of red heat were appearing on bare metal, and smoke-hazed air being drawn away through vents. And so the unreal world Pedagogue had created came to an end. When the ship’s fields collapsed, actinic light obliterated everything and Tack began to wake.

She was running out of air, and now the force of her will was pushing the scale in some other way. She found herself being dragged sideways back into that dimension of black sea underlining a grey void, but drawing along with her part of the previous place. From the scale itself barely visible lines of light sprang out and turned back in on themselves, all looping at precisely the same distance out from it, so she appeared to rest at the centre of a huge, luminous dandelion clock. Then this spheroid took on a glassy quality, the light draining out of it and its surface splitting and coalescing into veins and ribs, as of water poured onto something greasy. Encaged in this cocoon she fell, gulping at nothing in the darkness, consciousness fading. But still she had some will left and attempted to force her way back into her own reality. Around her the black sea rose up, and gravity grabbed her and slammed her down on a floor of hyaline bones. She gasped in frigid air, grateful for each painful breath. Rolling upright, she found herself still encaged in the sphere, hovering now over frigid ground, a dark grey sky above, strange frozen trees to her right and a snowy plain to her left. Terrified that she would be snatched away from breathable air again, she scrabbled for a gap in the cage wall, but even as she found it and fell through, the cage itself began to fold away into that other place.