‘Shoala, you mean?’ she said, her voice catching despite herself.

‘Yeah—he’s normally the first down into the lounge. He’s so eager for human time, I sometimes wonder if he chose the right career.’ He eyed her up and down, taking in both her nakedness and her carapace. ‘There some problem?’

Orlandine reached up and touched the hard edge of her cowl. ‘We’re still running some mass searches—rather a lot of ionization when the converter detached.’

‘I thought we predicted that?’

I don’t really need a technical discussion now. ‘Just making sure. I’ll shed this in my quarters and join you soon.’ She moved on, noting a glint in his expression. No suspicion there, though—he obviously assumed she was taking her carapace back to her rooms prior to enjoying some entertainment with her partner.

Eventually she entered her quarters, then went directly to her wardrobe. The doors slid aside at a non-verbal command. A similar command opened a safe in the back of it. For a moment she ignored this while finding and donning some knickers, and a pair of loose baggy trousers that belted around her hips below the carapace supports connected to her hip bones. Activating a little device in the belt then caused the trousers to shrink until skin-tight. She next pulled on enviroboots, and a backless green blouse specially designed to be worn with a carapace. From the safe she took out the Jain node—sealed up in its anti-nanite container—and dropped it into the blouse’s top pocket. She had put it away in the safe directly after Shoala observed it, wondering what self-destructive impulse made her leave it out on display in the first place. Next she found a carry-all, and took it over to the display case, which she opened by sending a signal ahead of her. Into the carry-all went the rest of her collection, but nothing more. There seemed no point taking anything else, and she was all too aware that only twenty minutes remained before this place was rattled by a small nuclear explosion.

From her quarters she headed directly to a drop-shaft distant from the one taking others to the Feynman Lounge. Only a couple of women passed her, one wearing an aug and the other nothing obvious, so she was probably gridlinked—there were few people here without an augmentation of some kind. They glanced at her without interest and continued conversing in low tones.

Stepping into the drop-shaft, Orlandine knew the worst was over, since she would find few of the higher-ranking haiman staff down in the shuttle bay. As she stepped out into that bay itself, a sudden horrible thought jerked her to a halt.

Did I really need to kill Shoala?

Yes, yes, she did… she ran the scenarios. She could not afford to live in the hope she would remain undiscovered, so must now flee, and as an overseer of one of the largest construction projects in the Polity her abrupt abandoning of her post would be thoroughly investigated by forensic AIs. Their attention would have focused on Shoala, and he, having nothing to hide, would have opened all his files and his mind to them. The inevitable discovery that she possessed a Jain node would result in Polity AIs expending huge resources in hunting her down. This way, however, they would think they only pursued a murderess, so the resources they expended would be limited… hopefully.

This particular bay comprised a narrow area lined along its two longer sides by numerous one-man inspection pods—globular affairs containing one seat, simple controls, and ionic directional thrusters. A maglev strip ran down the centre of the floor towards a far airlock. Passing many empty spaces for pods, Orlandine strode along briskly until she reached the first of them on one side, turned and stepped through its open side door. Automatically, as soon as she plumped herself down in the seat, the door closed and the pod manoeuvred out on to the maglev strip. She strapped herself in, and rather than control the vehicle through her carapace as the signals might be traced, took hold of the manual joystick. With a low hum the pod buoyed up on the maglev field and wafted towards the airlock, which consisted of an inner shimmer-shield and an outer hard door. The pod slid through the shield, halted while the iris door opened, then fell out into the night.

Above her the Heliotrope rested in docking clamps, attached to the station by various umbilicals. The long sleek ship terminated at its prow in a forked pincerlike extrusion. This was for manipulating large objects in space, and was another reason why Orlandine had chosen this particular ship. Turning her pod over so that the side of the station now appeared as a plain of steel below her, she pushed the joystick forwards. Drawing close she sent a simple signal, and an irised lock opened in the vessel’s hull. Soon she manoeuvred the pod to dock, then abandoned it to enter, and finally take her place in an interface sphere inside the ship.

‘How may I help you?’ asked the ship AI.

‘Take us out,’ she replied. ‘I need to take some direct ionization readings.’

Opening herself into the ship’s systems she observed the umbilicals detaching like flaccid worms. Autohandlers had loaded the last few items requested only minutes ago. Clamps detached and the slight spin of the station cast the ship adrift. Now clear of it, she observed the Cassius Station in all its might.. Ovoid and gigantic, the thing was 200 miles from top to bottom and 150 miles wide, yet in itself it was but a single component that would be later fitted into the Dyson sphere, along with millions like it. Orlandine focused on the equator while selecting certain crucial programs from her files—only slightly different from those she had used to kill Shoala’s systems. The detonation lay only three minutes away. To delay until after that would be to forewarn this ship’s AI.

‘Heliotrope, here are the parameters of a search, and related data.’ She sent the programs to the AI, and trustingly it accepted them without checking. As the Jain programs isolated the AI and began to take it apart, she watched the station. Precisely on time a brief speck of light appeared on its huge surface. But the mere fact that she saw it without magnification, from this distance on a structure so massive, meant a few thousand cubic yards of the station had been vaporized along with Shoala’s interface sphere, and his corpse. After a moment she picked up signals meant for her, and ignored them, while delving into the complexities of entering U-space. The ship AI died just as the ship it controlled dropped out of existence.

With a feeling of extreme déjà vu Thorn walked out along the platform, but that sensation passed as he gazed out across the roiling sea. When Skellor had come here, and for ten shillings picked up his Jain node at a market stall, there had been no sea here at all, but now the terraforming process was much advanced. The market now absent, large structures had arisen on what must now be described as a pier. A big ship lay magnetically moored to it, and a crane lowered large cargo containers into its hold.

‘Why a ship?’ he asked.

‘That was Aelvor’s choice,’ replied Jack via Thorn’s comlink. ‘For energy efficiency. The runcible is downside so requires the main output of present fusion reactors, thus for planetary transport he is using less energy-profligate means. The output from the reactor aboard that ship would only be enough to lift an AG transport one tenth the size.’

‘Then why not bring in more reactors?’

‘Economics. Aelvor is working within a budget.’

Economics.

Thorn tasted the word. When you worked for ECS it was one you knew about, but also knew only applied to others. The formulae that AIs employed to control financial systems he knew to be as esoteric as those they used to control runcibles. He understood that the profit margins of all concerns were limited by those formulae, as were their rate of expansion and resource demand. This last applied here, too, for Aelvor, the haiman overseeing the terraforming of this place, had been allocated limited resources and was left to assign them as he saw fit. Here then was an attempt to allow a terraformer to create something not quite so homogeneous as many worlds in the Polity. This world was also unusual in having a haiman in charge—the Osterland AI’s power being limited solely to the runcibles and their infrastructure. He wondered how the AI itself felt about that.