When Clara's seven-second recording ended, the old phone went dark for good.
The minibus dashboard still held the green route at its third turn. Risk: zero. The destination had no name.
Martin copied the route onto paper, then crossed it out section by section from the beginning.
The shortest flyover exit. The brightest main road. Continuous public-camera coverage. Every safe segment led in the same direction—away from the three flood channels in the north.
“Hannah told us not to take the safest route,” Evelyn said.
“Which means the safe route is still useful.”
He extended each avoidance in reverse. The three lines enclosed a narrow triangle on the north side of the blank map. Flood channel N-06 lay inside it.
The system had not identified their destination.
It had drawn a route around it.
A new alert appeared: PASSENGER COMMUNICATION COMPLETE. EVACUATE IMMEDIATELY. The right-hand door opened without a sound. Beyond it was not the letter-box corridor but a service passage marked by a yellow edge line.
Green evacuation lights came on one after another.
Martin went the other way.
He and Evelyn crossed the simulated streets to a roller shutter. Beside it was an exit symbol with no arrow. Evelyn clicked the mechanical counter. Martin lifted the shutter.
Wet afternoon heat rushed inside.
They emerged into the staff car park behind the test facility. Rainwater on the roofs of parked cars reflected a sun broken apart by clouds. Traffic moved steadily along the flyover. The city appeared complete.
When they looked back, the shutter opened onto a storeroom full of traffic cones. The white minibus, model streets and nine workstations were gone.
The black notebook remained. So did the names and acoustic codes written in red.
Evelyn took out the clock that ran seventy-three minutes slow. Its second hand was fixed at 1:46. Official time was 3:07.
“Shadow hour is over?” Martin asked.
“Out here, yes.”
She turned the clock towards the storeroom. In the glass, the second hand advanced one mark. She faced it towards the car park again. It stopped.
The facility had not left shadow hour. It had brought a fragment of that hour to the other side of its door.
The fragment was leaking out.
Their only car was Evelyn's old hatchback, parked near the nameless apartment. A ride-hailing app offered a nine-minute pickup, then instructed them to walk a kilometre to a monitored main road. Its route curved carefully around the rear of the facility.
Martin cancelled it.
They crossed the car-park drain and followed a shoulderless service road west. Lorries threw brown water over the verge. Their phones kept asking them to turn back. Every safer alternative avoided N-06.
Twenty minutes later, they reached Evelyn's car. A parking notice had been tucked beneath the windscreen wiper. The issue time was 3:12 p.m.
It was 3:11.
Evelyn left the ticket intact. She wrote their location and both times on the back, then placed it inside the notebook.
Her tablet held thirty years of planning maps for the north of the city. Not public navigation maps: offline drawings retained from demolition surveys, diversions and conservation applications. Each generation used a separate colour. Existing roads in black. Approved works in red. Withdrawn projects in blue. Proposals never executed in the palest grey.
On the latest drawing, N-06 was only an underground flood channel.
Ten years earlier, there was still no station above it.
Eighteen years earlier, a faint grey road ran beneath a former Northern Loop platform, crossed the channel and joined the industrial belt. Its code was N0-17.
Name: NORTH RELIEF ACCESS.
Status: NOT BUILT.
“There's a zero inside the code,” Martin said.
“Later maps removed the zero. The entire road went with it.”
Evelyn overlaid land acquisition, drainage and old rail drawings. N0-17 had no construction approval, no contractor and no opening date. Yet three unrelated systems had reserved space for it. Fourteen spare metres between flyover piers. A reinforced roof over one section of flood channel. A road at the edge of the industrial estate turning towards an empty field.
A road never built had already persuaded everything around it to move aside.
Martin thought of Tianheng Tower's ninth floor. It had not been added. Every route had learned to avoid it.
“Take us to the intended entrance.”
Evelyn did not activate navigation. She copied five fixed points that did not depend on road names: a transmission tower, a pump house, paired flyover columns, an old sluice gate, the frame of a north-facing billboard.
They travelled by landmarks alone.
Shopfronts gave way to workshops, then to walls, warehouses and waste ground piled with tyres. Low rainclouds pressed over the city. Sunlight cut beneath them from the west, laying an unnatural sequence of bright rectangles under the flyover.
At every junction the car display zoomed in by itself. No one had started guidance. Again and again it announced: A SAFER ROUTE HAS BEEN SELECTED FOR YOU.
Evelyn covered the screen with a black cloth.
At the fourth landmark, a metal fence blocked the road. Waist-high grass filled the land beyond it. The concrete crown of the old sluice stood in the distance. Officially, there was no road here, only an undeveloped reserve.
An empty road-sign bracket hung from the fence. Four bolts remained, spaced to take a standard route number.
Martin got out. There were no tyre ruts beyond the fence. The grass stood at one height. If N0-17 had ever reached construction, the land should have held a stone base, a kerb or drainage mouths. It held none.
At the end of the fence he found a locked gate. A municipal warning on the post said: FLOOD INFRASTRUCTURE. NO ENTRY. The padlock was new; the hinges had accumulated years of red rust.
Evelyn took the steel rule from the boot. She did not force the lock. She reached through the gap and pushed aside a clump of grass.
A white reflective bead lay beneath it.
Another sat half a metre away. A third, half a metre beyond that. Buried in the soil, they formed the spacing of a painted road edge.
“Road paint without a road.”
Martin lifted one with paper. The manufacturer's batch code dated it to eighteen years earlier—the year N0-17 was officially classified as never built.
Someone had marked a carriageway across ground that had never carried one.
The old phone was dead. Martin's handset still had reception, but its location jumped among three parallel roads. Each time the dot moved, the reflective beads flashed in the grass.
Evelyn checked the old clock. Its second hand had advanced nine marks without stopping.
The fragment of shadow hour leaking from the facility had followed the route they took against guidance.
Official time: 3:39. The clock: 2:26. The difference remained seventy-three minutes.
The sun emerged beneath the clouds. Shadows from the fence stretched east across the grass.
Every upright cast a black line except the gate. A gate-shaped shadow should have joined the others. Instead, a bright rectangle appeared on the ground beneath it.
The grass inside the light began to fold away from the centre.
There was no wind. Every blade bent along the same invisible edge, revealing two parallel white lines. No tarmac lay between them, only wet soil deepening in colour.
The second hand advanced to the tenth mark.
The dark ground reflected the sky without becoming water. Clouds moved forward inside it, opposite to the clouds overhead.
“The entrance isn't the gate,” Evelyn said. “It's the shadow the road should have cast.”
Martin checked the new padlock's asset code against the municipal register. Reason installed: PREVENT ACCESS TO UNOPENED ROAD.
The system said the road had never existed, yet someone had locked it.
He photographed the notice and code. In the image, the fence was continuous. The gate had become ordinary uprights, and the bright rectangle did not appear.
The paper rubbing still held the three reflective beads.
Evelyn folded the old planning map into a narrow strip and pushed it beneath the gate. The paper did not fall onto the grass. It settled flat against an unseen road surface. The grey line of N0-17 aligned exactly with the white line in the ground.
The padlock clicked.
No key touched it. The bolt withdrew on its own.
Under the black cloth, the car display glowed red: RISK AHEAD CANNOT BE CALCULATED. SELECT ALTERNATIVE ROUTE.
Guidance recalculated. A green line extended behind them, circled the fence and joined the zero-risk route offered twenty-three minutes earlier.
“Once we enter, navigation will lose us,” Evelyn said.
“Everyone may lose us.”
Martin thought of the six-o'clock follow-up for Ian. Two people were supposed to confirm the boy had come home. That relationship was still recalculating. If Martin disappeared here, the reminder might lose its creator, but those waiting for Ian would still exist.
He wrote an offline message to Julian Chow: CONTACT IAN'S FATHER AND AUNT BEFORE SIX. DON'T ASK ABOUT THE CRASH. ASK WHETHER THE BOY IS HOME.
The message did not send.
He set it to leave automatically when his phone recovered a valid location. If they did not return, Julian would never know what to do.
It was the narrowest way back Martin could leave.
Evelyn reversed the hatchback into the flyover's shadow and killed the engine. They would not take their phones. Electronic positioning would keep choosing a road that existed.
Martin carried the black notebook, a red pen, the mechanical counter and the parking notice. Evelyn took the old clock, the steel rule and the N0-17 plan.
They passed through the gate.
Their shoes did not sink into mud.
Coarse tarmac appeared beneath them, but only between the white lines. Grass still brushed their trousers at either edge. Seen ahead, the road was fourteen metres wide. Seen from the side, it became a dark plane with no thickness.
Martin turned back.
The fence remained, but the gate was gone. An old hatchback without plates stood under the flyover. He knew it belonged to Evelyn, yet could not remember which opening they had used.
Evelyn marked the entrance on her plan in red. The dot slid a centimetre north.
The way back had begun to move.
They kept walking.
N0-17 had no working streetlights, though a pole stood every forty metres. Every lamp faced the grass, as if the road had later shifted to the other side. When they passed a pole, the light behind them came on. The road ahead remained dark.
At the seventeenth pole, they heard a train approaching a station.
The announcement came from high on their right.
Four seconds later, water passed underground to their left.
The interval matched the end of Hannah's message.
Evelyn drew the directions on the plan. Their intersection fell halfway along N0-17, where an intended crossroads had been removed from every later version.
Old tyre tracks began to appear on the road. One at first, then two, then five, as though vehicles from different years had just crossed the wet surface. The patterns overlaid one another without any of them leaving the white lines.
Martin touched one. Warm water filled the tread.
A horn sounded ahead.
Not a train.
Headlights swept across the nonexistent junction, illuminating rain haze and a row of leaning crash barrels. Tyres lost their grip with a single rising shriek.
They stepped beyond the white line. The tarmac vanished beneath them. Dark grass passed through the shape of their shoes without sensation.
The impact came from ahead. Heavy metal folded first, then glass burst.
Every unlit streetlamp came on at once.
A bus stood at the end of the road.
It had struck a barrier connected to nothing. Its front end was crushed, white steam rising from the engine. Wipers swept across a dry windscreen. The doors remained shut. The collision could not have happened more than ten seconds earlier.
The destination display showed only a zero.
Martin ran to it. Interior lights came on row by row. No one rose. No one called for help.
Every seat held a fresh depression. Several belts were fastened. Fingerprints shone on the rails. The rear window was misting from the inside.
The driver's seat was empty.
A passenger count flashed on the dashboard.
BOARDED: 21.
RECORDED: 0.
Martin opened the emergency records compartment. The manifest, tap-in log and camera index were all present. Every page contained no names.
A bus carrying twenty-one people had crashed seconds ago.
Every system said it had always been empty.