King continued examining and taking apart the downloaded memory copy, ascertaining which direction that motley collection of the dispossessed had taken. Thereafter there seemed little more to learn. The drone had been sitting here on this asteroid for decades, twiddling mental thumbs. King realized, even as its composite-attack-ship belly ground against rock, that it had already decided to follow. Of course, the AI did not want anything following it, or to leave any clues to where it had been. King released the grapnel, using a brief burst of thrusters to impel itself away from the asteroid.

‘What. . . where are you going?’ the war drone asked.

Its radio signals would take centuries to be picked up in the Polity. But what if something came out this way, searching? King selected a fuser missile in its carousel, and when sufficiently far out, fired it. The bright silent flare reduced the war drone to a splash of metal across the rock surface. The King of Hearts turned, set its course, dropped into U-space.

‘So you survived Hiroshima, old man, and have lived for five centuries?’

Horace Blegg gasped in cold air, blew it out in a misty cloud -the frigidity of his surroundings as sharp as the recent replays of his memory. The glassy and whorled plain extended to infinite distance below a light jade-green sky. Perhaps this was supposed to represent the inside of the disc.

‘Who are you?’ he asked.

‘Atheter,’ came the reply. ‘In your terms.’

To warm himself up, Blegg began walking, his envirosuit boots soft on the hard surface. A tension grew across his skull, and something tugged and worried inside his mind and memory. It almost felt to him as if his memories were being stacked like cards, shuffled, and sometimes dealt. Four distinct instances in his life had already been replayed. Two at Hiroshima, one at Nuremberg, and one at Berkeley: strong formative episodes.

‘You survived Hiroshima and have since been present during many major events in human history.’

Blegg halted. A playing card, the size of a door, rose out of the glassy ground ahead. It depicted two towerblocks etched against a blue sky. His own image, the cards, reflected back at him. He saw the planes fly in, the subsequent explosions and fire. He remembered standing on the Brooklyn Bridge, watching the horror and not remembering where he had been before that. A young man who minutes before had been jogging along the sidewalk, German by his accent, said, ‘One plane could be an accident but . . .’

A woman just struggled to heave her bulk from her car. ‘Oh my God, what do you mean? Oh my God.’

‘Two planes.’ The German shrugged, and chose to add nothing further.

They watched there for hours: the endless billowing of smoke, small distant objects falling fast.

‘No ... oh no.’

Oh yes.