Erentz started firing her flare launcher at piles of rubbish. There were several spectacular bursts of flame as bundles of packaging and abandoned containers ignited. Sooty flakes wafted round in the microthermals. “It can’t stand the heat,” she shouted at the bewildered street poet. “The flames can beat it back. Come on, help us!” Tolton aimed his own laser, adding to the melee.

The Orgathé was just visible, a lenticular patch of shaded, rippling air, itself distorted by the heat gushing upwards from the tips of the flames. It held its course, arrowing down towards them, until the last possible moment. The long scrabbling tendrils hanging from its underbelly parted furiously as they skimmed the flames.

Tolton couldn’t see it anymore. His eyes were smarting from the bitter chemical smog billowing out from the roaring plastic. Lush ebony smoke was swirling round his legs, obscuring the ground. Heat seared the skin over the back of his hands as he held them up to defend his face. He could smell singeing hair. A puissant blast of air sent him staggering to his knees, whipping the smoke round into a blinding cyclone. For a second the heat vanished, replaced by its absolute opposite. Glistening sweat transmuted into frost right across his body. He thought his blood was going to turn solid inside his veins, the cold was so frighteningly intense. Then it was gone.

Smoke was rolling itself into vortex spirals as hail stung his face.

“Yes!” erentz shouted up at the retreating Orgathé. “We beat the bastard. It’s frightened.”

It’s repelled,the personality chided. There’s a big difference.

Sensitive cells showed her the airborne monster coming round back to the shanty village in a long curve. The flames from the first buildings they’d fired were shrinking.

Move to a new section,the personality said. Let’s hope the bugger gives up before you run out of things to burn.

The Orgathé made another five attempts to assail Erentz and her group before it finally withdrew and flew deeper into the habitat interior. Over half of the shanty village had been razed by then. Tolton and the others were caked in grime, and retching badly from the smoke and fumes. Their exposed skin was cracked and bleeding from the heat. Only Erentz, with her suit and mask, was unaffected.

You’d better start walking towards the caverns,the personality said. We’ll have a couple of trucks sent to pick you up.

Erentz slowly surveyed the blackened ruins with their slowly solidifying lakes of molten plastic. Couldn’t we just wait here? These guys have been through hell.

Sorry, more bad news. We think the other sections of the visitor are coming up from the Djerba. The last few functioning systems we’ve got in there are being extinguished floor by floor. It can’t be anything else.

Shit.she gave the lobby an apprehensive look. What about Dariat?

Nothing.

Damnit.

We are he. In us he lives on.

He’d argue that.

Yes.

There must have been fifty of those brutes down there.

No,the personality said. The glimpse we were given of the visitor without its visual shield was a brief one, but detailed memory analysis of the scene indicates twelve, at most fifteen, were birthed from the mother creature. We don’t believe they are anything like the size of the one which has pursued you.

Well that’s a real big relief.

They started picking their way through the sulphurous, carbonized wreckage of the buildings, heading for the track that wound its way across the scrub desert to the northern endcap. Tolton balked until Erentz started explaining the reason for urgency. “So we can’t get down there to find what happened to him?” he asked.

“Not until we know it’s clear. And then . . . what do the remnants of a ghost look like? It’s not as if there are going to be any bones.”

“Yeah,” Tolton gave the lobby a final, remorseful look over his shoulder. “I suppose not.”

The Orgathé cruised through the air, scanning the inside of the object for the nearest source of life-energy. The interior was even worse than the external shell. Here the living layers were protected by many metres of dead matter with just the thinnest sprinkling of cells smeared on top. Plants, that had a pitiful content of life-energy. No use to the Orgathé, it needed to regain the true richness which lay beneath. There were several entrances back down to the protruding spindles, which it ignored. This time it wanted a more secure feeding place.

For a while it scouted round over the pink grasslands before eventually turning towards the strip of liquid. Just above the beaches and coves of the far side the surface was riddled with large cave entrances, leading deep into the solid mantle of matter. In there, large currents of the life-energy burned brightly, flowing through vast layers of living cells stacked one on top of the other. Tunnels of living fluids formed complex warrens, thousands of tributary channels connecting to the town-sized organs encased within the endcap.

The Orgathé landed on a broad expanse of platinum sand that formed one of the trim little coves. Elaborate filigrees of glacial frost sprang out from its feet as it clawed its way up to the nearest cave. As soon as it reached the buff, grass and bushes perished instantly, their leaves turning a rancid brown and freezing into shape. It barely scraped through the cave entrance. Mock-stalactites snapped off as its hardened carapace brushed against them, shattering as they clattered to the floor. The Orgathé’s appendages were modified then hardened by further expenditures of energy to help it bulldoze its way past constrictions and awkward bends. Contact with the hot matter bruised its body, but it was slowly acclimatising to the heat endemic within the habitat.

After a while it came up against a huge tunnel conveying the living fluid. It broke through the thick wall and eased its entire body into the driving torrent. For the first time since it had slipped into the dark continuum it knew contentment. With that came the shiver of expectation.

The trucks still hadn’t reached Erentz and the others, though she could just see a small dark speck moving somewhere out there on the scrub desert ahead of them. Walking had become an automatic trudge while her mind followed the flight of the visitor. Valisk’s general affinity band was filled with speculation and comment as the personality and Erentz’s relatives discussed what was to be done next.

Coverage once the Orgathé moved into the cave wasn’t so easy. Tracking its movement was a question of following the null-zone surrounding it by the trail of dead polyp left in its wake.

The damn thing has definitely broken into the nutrient artery feeding my mineral digestion tract,the personality said. It’s creating severe flow pressure problems.

What’s it actually doing to the nutrient fluid?erentz asked. Can you sense any change?

The fluid has been chilled down considerably, which is understandable given what we know of the visitor’s intrinsic capability. And over ninety per cent of the corpuscles are dead. A strange outcome, the fluid temperature alone is not sufficient to kill them.

When Dariat and I disturbed it down in the Djerba, it’d broken into one of the starscraper’s nutrient fluid tubules. That must be what it’s after. It’s feeding on your nutrient fluid.

An excellent hypothesis. However, it is not digesting the fluid, we would have been alerted to the loss of volume. And we strongly doubt we have a compatible biochemistry.

It must need something the nutrients contain. Can you run an analysis on the fluid in the Djerba and the other starscrapers where you have visitors squatting?