"If I’d been there a little older, I’d’ve been Jack’s man," Ori said. "He’s the boss, always was. I’d have followed him. You know, I saw him die."

"Jack don’t die, son."

"I saw him."

"Aye like that maybe, but, you know, people like Jack they don’t die."

"Where is he now, then?"

"I think Jack’s looking and smiling at you doublers, but there’s others, friends of ours, mates of mine, he’s thinking, ‘Bully for them!’ " The old man clucked laughter.

"Friends of yours?"

"Aye, friends of mine. With big plans! I know all about it. Once a friend of Jack’s, always, and a friend of all his kin too."

"Who are you friends with?" Ori wanted to know, but Jacobs would say nothing. "What plans? Who are your friends?" The old man finished his food, running his fingers through the residue of egg and sucking them. He did not notice or care that Ori was there; he reclined and rested, and then, without looking at his companion, he shuffled into the overcast day.

Ori tracked him. It was not furtive. He simply walked a few steps behind Spiral Jacobs, and followed him home. A languorous route. By Shadrach Street through the remnants of the market to the clamour of Aspic Hole, where a few fruiterers and butchers had stalls.

Spiral Jacobs spoke to many he passed. He was given food and a few coins.

Ori watched the society of vagabonds. Grey-faced women and men in clothes like layers of peeling skin greeted Jacobs or cursed him with the fervour of siblings. In the charred shade of a firegutted office, Jacobs passed bottles for more than an hour among the vagrants of Aspic Hole, while Ori tried to understand him.

Once a group of girls and boys, roughnecks every one, a vodyanoi girl kick-leaping and even a young city garuda among them, came to throw stones. Ori stepped up, but the tramps shouted and waved with almost ritualised aggression and soon the children went.

Spiral Jacobs headed back east toward the Gross Tar, toward the brick holes and the Griss Fell shelter that were as much as anything his home. Ori watched him stumble, watched him rifle through piles of rubbish at junctions. He watched what Jacobs picked out: bewildering debris. Ori considered each piece carefully, as if Spiral Jacobs was a message to him from another time, that he might with care decrypt. A text in flesh.

The wiry little figure went through New Crobuzon’s traffic, past carts piled with vegetables from the farmlands and the Grain Spiral. Hummock bridges took him over canals where barges ferried anthracite, and through the afternoon crowds, children, bickering shoppers, the beggars, a handful of golems, shabby-gentile shopkeepers scrubbing graffitied helixes and radical slogans from their sidings, between damp walls that rose and seemed to crumble, their bricks to effervesce into the air.

When after a long time deep colours leeched across the sky, they had reached Trauka Station. The railway cut overhead at an angle that ignored the terraces below it. Spiral Jacobs looked at Ori again.