He opened his toolkit and brought forth two little bottles. He shook them both briefly, then opened the stopper on one and dripped it quickly across the thicket of wires. The viscous liquid seeped in, saturating the connection. The man repeated the operation with the second bottle. As the two liquids met there was an audible chymical reaction. He stood back, stretched his arm to continue pouring, closing his eyes as smoke began to billow out from the rapidly heating metal.

The two chymicals met and mixed and combusted, spewing out noxious fumes with a quick burst of heat intense enough to weld the wires into a sealed mesh.

When the heat had lessened, the two men began the final job, laying ragged strips of sacking across the new connection and cracking the seals on a tin of thick, bituminous paint, slathering it on thickly, covering the bare metal seal, insulating it.

The men on the fire-escape were satisfied. They turned and retraced their steps, returning to the roof, from where they dissipated into the city as quick and untraceable as smoke in a breeze.

All along a line between Griss Twist and The Crow, similar operations were taking place.

In the sewers, furtive men and women picked their way through the hiss and drip of the subterranean tunnels. Where possible, these large gangs were led by workers who knew a little of the undercity: sewage workers; engineers; thieves. They were all equipped with maps, torches, guns and strict instructions. Ten or more figures, several with lengths of heavy cable, would pick their way together along their allotted route. When one piece of slowly unrolling wire ran out, they would connect another and continue.

There were dangerous delays as parties lost each other, blundering towards lethal zones: ghul-nests and undergang lairs. But they corrected themselves and hissed for help, making their way back towards their comrades’ voices.

When they finally met the tail end of another team in some main node of tunnel, some medium hub of sewer, they connected the two huge ends of wire, welding them with chymicals or heat-torches or backyard thaumaturgy. Then the cable was attached to the enormous arterial clutches of pipes that travelled the lengths of the sewers.

Their job done, the company would scatter and disappear.

In unobtrusive places, with extended backstreets or great stretches of interlinked roofs, the cable would poke from underground and be taken by the crews working above the streets. They unrolled the cable over hillocks of rank sedge behind warehouses, up stairways of damp brick, over roofs and along chaotic streets, where their industry was invisible in its banality.

They met others, the cable lengths were sealed. The men and women dispersed.