‘Best begin cooking your breakfasts, Ublala, we have far to walk today. And it will be through a warren, for I like not the look of that desert ahead.’

Ublala scratched his itchy scalp. ‘If you can fly, why don’t you just go where you’re going? Me and my wife, we can find someplace else to go. And I can bury the mace and the armour. Right here. I don’t like them. I don’t like the dreams they give me—’

‘I will indeed leave you, Ublala, but not quite yet. As for the weapons, I fear you will need them soon. You will have to trust me in this, friend.’

‘All right. I’ll make breakfast now – is that half a pig? Where’s the other half? I always wonder that, you know, when I’m in the market and I see half a pig. Where’s the other half? Did it run away? Haha – Ralata? Did you hear me make a joke? Haha. As if half-pigs can run! No, they’d have to kind of hop, wouldn’t they? Hop hop hop.’

From under the furs, Ralata groaned.

‘Ublala.’

‘Yes, Draconus?’

‘Do you believe in justice?’

‘What? Did I do something wrong? What did I do? I won’t make jokes no more, I promise.’

‘You’ve done nothing wrong. Do you know when something is unfair?’

Ublala looked round desperately.

‘Not at this moment, friend. I mean, in general. When you see something that is unjust, that is unfair, do you do something about it? Or do you just turn away? I think I know the answer, but I need to make certain.’

‘I don’t like bad things, Draconus,’ Ublala muttered. ‘I tried telling that to the Toblakai gods, when they were coming up out of the ground, but they didn’t listen, so me and Iron Bars, we had to kill them.’

Draconus studied him for some time, and then he said, ‘I believe I have just done something similar. Don’t bury your weapons, Ublala.’

He had left his tent well before dusk, to walk the length of the column, among the restless soldiers. They slept badly or not at all, and more than one set of red-shot, bleary eyes tracked Ruthan Gudd as he made his way to the rear. Thirst was a spreading plague, and it grew in the mind like a fever. It pushed away normal thoughts, stretching out time until it snapped. Of all the tortures devised to break people, not one came close to thirst.

Among the wagons now, where heaps of dried, smoked meats remained wrapped in hides, stacked in the beds. The long knotted ropes with rigged harnesses were coiled up in front of each wagon. The oxen were gone. Muscle came from humans now. Carrying food no one wanted to eat. Food that knotted solid in the gut, food that gripped hard with vicious cramps and drove strong men to their knees.

Next on the trail were the ambulance wagons, burdened with the broken, the ones driven half-mad by sun and dehydration. He saw the knots of fully armed guards standing over the water barrels used by the healers, and the sight distressed him. Discipline was fraying and he well understood what he was seeing. Simple need had the power to crush entire civilizations, to bring down all order in human affairs. To reduce us to mindless beasts. And now it stalks this camp, these soldiers .

This army was close to shattering. The thirst gnawed ceaselessly.

The sun cut a slice on the western horizon, red as a bloodless wound. Soon the infernal flies would stir awake, at first drowsy in the unwelcome chill, and then rushing in to dance on every exposed area of skin – as if the night itself had awakened with a hundred thousand legs. And then would come the billowing clouds of butterflies, keeping pace overhead like silver clouds tinted jade green – they had first arrived to feed on the carcasses of the last slaughtered oxen, and now they returned each evening, eager for more.

He walked between the wagons with their moaning cargo, exchanging occasional nods with the cutters who moved among their charges with moistened cloths to press against blistered mouths.

No pickets waited beyond the refuse trench – there seemed to be little point in such things – only a row of grave mounds, with a crew of a dozen diggers working on a few more with picks and shovels. Beneath the ground’s sun-baked surface there was nothing but stone-hard white silts, deep as a man was tall. At times, when the pick broke a chunk loose, the pressed bones of fish were revealed, of types no one had ever seen before. Ruthan Gudd had chanced to see one example, some massively jawed monstrosity was etched in rust-red bones on a slab of powdery silt. Enormous eye sockets above rows upon rows of long fangs.

He’d listened to the listless conjecture for a short time, and then wandered on without adding any comment of his own. From the deepest ocean beds , he could have told them, but that would have slung too many questions his way, ones he had no desire to answer. ‘ How the fuck do you know that? ’