Prologue
Ropemaker Renal Annexe, Stepney
Wednesday 21 January
04:09
By the eighth night of the freeze the car park behind the Ropemaker Annexe had grown a skin of ice that even the grit lorry had stopped arguing with, and Gwen Pritchard had stopped trusting the radiators. She wore a cardigan under her tunic and carried a mug of tea from chair to chair, a mug being the one hand-warmer a ward permits.
She was fifty-four, from Merthyr, with twenty-six years of nights behind her and the vowels she had never tried to lose. Seven patients lay in the long room on the first floor, each in a recliner with one arm held out to a machine, and the machines were doing what they did, which was to take the blood out, clean it and give it back. This was the night list. Nobody chose dialysis at four in the morning. You were put there because your pressure dropped in the daytime sessions, or because you couldn’t be spared from a job, or because there had been no other chair.
The annexe was fifteen years old and had been built under a finance deal that the trust’s board signed in 2009 and, as far as Gwen could tell, never understood. The trust owned the patients. A company owned the building: the lifts, the lights, the heating, the sockets, the generator in the car park. Its name was on a brass plate in the lobby and on none of the paperwork she was ever asked to sign.
On the wall beside the nurses’ station hung a screen that had come with the building. Nobody had been trained to read it. Most nights it showed a pale green floor plan and did nothing, and the ward had come to treat it as furniture. At 04:09 the plan turned amber and a box opened over the middle of it.
DEMAND EVENT 7 ANNEXE FEEDER B WILL SHED IN 00:03:00 NO ACTION REQUIRED AEGIS GRID
Gwen read it twice. She had watched that screen shed the car park lights, and once the canteen, and nobody had ever died of a dark vending machine. It had never before named a feeder she knew.
She lifted the phone and rang estates. Lennox Dunne picked up on the fifth ring, from the basement, with his mouth full.
“Feeder B,” she said. “What’s on it?”
“B?” There was a pause while he found the sheet. “B is you, love. Whole first floor. Renal, the pharmacy fridge, the lifts.”
“It says three minutes.”
“It says a lot of things. They pay the trust to switch bits off when the grid’s tight. It’s in the contract.”
“Then ring someone and tell them we’ve got seven on machines.”
“Ring who? There’s a number on the screen and it goes to a recording.” He chewed. “And the set’s no use to you, before you ask. The transfer switch on the generator’s been on the faults list since November. I’ve logged it twice. It won’t close.”
Gwen put the phone down. The countdown read 00:02:14.
Gwen did what the folder said and what twenty-six years told her. She sent the healthcare assistant for the hand cranks (every blood pump on the unit had one, the manual called them an emergency measure, and she had last turned hers in 2011, on a Tuesday afternoon, in a thunderstorm). She woke the student, Bethan, and put a bag of saline where she could reach it. Then she walked the length of the room. The machines would run on their own batteries for a short while, fifteen minutes according to the makers and nine when Gwen had once timed it, and after that there would be seven handles and three pairs of hands.
Mr Farouk was awake in the end chair, seventy-one and retired off the number 25 bus. “Is there a problem, Nurse?”
“Weather,” she said. It was an answer that had never once been wrong.
At 00:01:12 she was back beside the screen with the mug going cold in her fist, doing the only thing left to do, which was to hold her face still for the benefit of the room.
At 00:00:41 the numbers stopped. The amber box blinked and a different line took its place.
EVENT 7 CANCELLED (OPERATOR)
The floor plan went back to green.
The lights did not so much as flicker. In the long room the machines carried on with their steady, slightly sulky hum, and Mr Farouk turned his head on the pillow to look at her, because he had spent forty years reading the faces of people who had nearly hit something.
She rang Lennox back. “Was that you?”
“Me, what?”
“Cancelling it.”
“I’ve not touched a thing. I’m eating a pasty.” A pause. “Operator, did it say? There isn’t an operator, Gwen. That’s the whole point of it.”
She rang the number on the screen, which nobody had told her to do, and got a recording that thanked her for her interest in Aegis Grid and invited her to hold. She held for four minutes with the receiver against her ear. Then she went back to the room.
Handover was at ten to seven. She wrote it up in the night book, the hardbacked A4 ledger that lived in a tray under the station and had done since the building opened, in the small clear hand she used for anything that mattered.
04:09 Aegis screen: demand event, feeder B to shed in 3 min. L. Dunne (estates) says gen. transfer switch faulty since Nov, ticket logged, will not close. 04:11 event cancelled, screen says “operator”. L.D. says not him. No loss of supply. 7/7 completed. Pts stable. G. Pritchard.
The day sister turned the page at ten past seven without reading it, as she turned every page, because nothing had happened. No incident form was raised, since there had been no incident. In February the winter’s night books went down to the basement in a cardboard box. The box went on a shelf.
Chapter 1
Item Sixty-One
Coldharbour Exchange, Hall C, Docklands
Wednesday 21 October
02:14
By a quarter past two Toma Albu had worked out where the cold came from. A chilled-water unit on the north wall of Hall C was blowing fourteen-degree air into an aisle designed for twenty-two, because somebody in 2019 had turned a dial and then been moved to another contract, and the setting had hardened into the climate. He knew this as he knew most things in a data hall, by kneeling on the concrete with his coat folded under his knees and looking at what the building had done while nobody was watching.
The cold did not trouble him. He had grown up in a flat in Drumul Taberei where the heating went off in October and the law allowed one forty-watt bulb to a room, and he regarded cold as a known quantity, like a bad landlord. The English, with their dressing gowns, found this odd in him.
Item sixty-one of one hundred and twelve asked him to reconcile the asset register against the metal. It was the only line on the schedule that needed a body in a building. The other hundred and eleven could be answered from a chair, and he had answered most of them from one, at a kitchen table in Leyton, with a pot of tea and a printout of the Aegis Grid security policy: two hundred and six pages, last revised in 2022. At the end of it he was to deliver a PDF of ninety pages. Ninety was the length at which a board would sign without reading and a regulator would file without opening. In nineteen years he had never delivered eighty-nine or ninety-one.
Aegis paid him £950 a day for fourteen days. This was the twelfth.
Eleven days had produced forty-one findings. A fire extinguisher past its inspection date in cage 9. A visitor log in which one signature stood in for three contractors. A policy that demanded quarterly restore tests, and a restore test last run in the second quarter of 2023, successfully, by a man who had since left. Nothing above amber. Aegis called this a mature control environment, and Toma, who had written the phrase himself in two hundred other reports, knew to the gram how much it weighed.
Hugh Ashdown, the head of assurance, had texted at midnight in the register of someone who sends messages at midnight to show that he is awake. Final night, I hope. Pack locks at noon. Anything for me? Toma had replied at 00:52: Nothing so far. He thought about that reply now. It had been true when he sent it.
He had come in at ten past midnight through the mantrap, two glass doors that will not both open at once, signed the visitors’ book with a pen on a chain, and been issued a lanyard that said ESCORT REQUIRED in red. Hall C smelled as they all did, of warm dust and clean plastic, with the cold underneath like a second smell. The racks ran away in rows beneath a ceiling of cable tray, each cage a wire box with a lock on it, each lock a different make, as though the tenants had been chosen for their inability to agree on anything.
The hall opened to third parties between midnight and five in the morning, the window Coldharbour kept for anyone who wasn’t staff, so that the day crews need never meet the people who counted their cables. Marlon Pike, the night engineer, stood behind him holding a torch the length of a police baton. He was paid by the hour and so was Toma, which gave them an understanding.
“Sixty-one,” Marlon said. He had read the schedule over Toma’s shoulder at midnight and since then had announced each item like a station on the line. “Where’s that get us?”
“Rack seven.” Toma pointed with the cap of his pen. “The register lists four devices. Two switches, a console server, a patch panel.”
“That’s what’s in there.”
“I count five.”
“That’s Aegis’s cage,” Marlon said, which was his answer to most things. “We just rent them the air.”
Toma read racks the way a farrier reads hooves. Plastic cable ties meant an engineer who did not expect to come back, and Velcro meant one who did. Two label printers had worked on rack seven, the older giving black on white in a faintly slanted face, the newer black on yellow, and between them they had named everything visible except what sat behind the door. The door was held shut with gaffer tape. The latch had gone at some point in the last decade, and a strip of grey tape, doubled over and pressed flat by successive thumbs, had taken over its duties. He peeled it. The adhesive had given up at the edges and stayed in place out of habit.
Behind it, under the patch panel and the switches and the console server, at the bottom of the rack where the cold air pooled, sat a black Dell PowerEdge R740 with a strip of masking tape across its bezel. On the tape, in capitals, in marker pen that had faded to the colour of weak tea, someone had written FB-LDN-02.
“Oh, him,” Marlon said.
“You know it.”
“It was here before me.”
“Which is?”
“Three years last March.”
FB stood for fallback. Aegis ran its British estate from two live sites and kept one more machine in reserve, in case both went dark at once, and this was it. On paper it had been retired in March 2024 under change record CHG-31187, which Toma had read eleven days earlier in the Aegis document room on the thirty-ninth floor at Canary Wharf, and which stated, in the flat past tense that such records prefer, that the host had been powered down, removed from rack and wiped.
It had not been removed. Its fans were turning.
Dust gave it away first, as dust usually does. On top of a dead machine it lies flat and even, like snow on a parked car. This one had none on top and a grey felt packed into its intake grille, two years thick, the kind that forms only where air has been dragged through a thing every second of every day. He put the back of his fingers to the bezel and felt the faint draught going in.
Then he took the infrared thermometer from his breast pocket, a yellow one, £19.99 from a trade counter in Barking, and walked round to the back of the row. The red dot settled on the exhaust grille and said 31.4. A server at idle draws about a hundred and forty watts, nearly all of which leaves as heat, so thirty-one degrees of exhaust into a fourteen-degree hall is a cheap ammeter. Whatever was running in there was not asleep.
Two power leads, both live. One network socket dark. The other showed a steady green and a flickering amber, and from it a flat grey lead climbed the side of the rack, its boot split and sleeved in tape, into the switch above. Cat 5e. The cable was older than the server it served.
In the second power supply a fan bearing had begun to go. It made a thin rising whine that dropped back every few seconds, the sound of a bearing that had been dry for a year and was starting to say so.
“That bad?” Marlon asked.
“It is nobody’s problem,” Toma said. “That is what is wrong with it.”
There was a procedure for this, and it was short. Item sixty-one, outcome: variance. Severity: minor. Comment: asset not on register, owner to confirm. One line on page forty-one of the report, between the paragraph on cable labelling and the paragraph on fire suppression. He could have it written before Marlon finished his yawn, be in bed in Leyton by four, sit at his desk by nine drafting the executive summary, and stand in the boardroom at Canary Wharf at four that afternoon, when the directors of Aegis Grid would receive a certificate saying their estate was sound. The certificate was what they were buying. The ninety pages were what made it look as though they hadn’t.
He did not write the line. He stayed where he was, crouched in the cold with the thermometer in his hand and the bearing singing in the dark of the machine, and what held him there was an invoice. Colocation is billed by the kilowatt, and for thirty months somebody had been paying for this one.
“Is the console server live?” he asked.
“Should be. Port twelve’s labelled for him.” Marlon crouched and squinted at a tag. “FB02 SER. That’ll be the serial.”
“I will go direct.” He did not want his name in anybody’s log until he knew whose machine he was standing in front of.
On the back panel of the Dell, between the power supplies, was a nine-pin serial socket, the old kind, with two thumbscrews. He took the blue USB adapter from the pocket where it had lived for nine years, and the null-modem cable from the pocket below. The adapter had a counterfeit chip and had served him on four hundred racks.
“Brew?” Marlon said. “Machine in the corridor does tea. Does something that calls itself tea.”
“I have a flask.”
“That’ll be cold.”
“Yes.”
He unscrewed the cap and drank some anyway. He had been hired to find nothing, and it was twenty-nine minutes past two.