[Alistair]

The red dot moved northeast at approximately one step every two seconds.

I sat in the command chair, index fingers steepled beneath my chin, watching Elena's position marker crawl across the 3D wireframe on Screen 6. The dot pulsed with each step--synchronized to pressure sensors embedded in the corridor floor, sensors built into the substrate of the concrete itself. Invisible. Integral.

She had been walking eleven minutes. Three hundred and seven steps. Average stride: twenty-two inches--shorter than normal by four. She was compensating for the cold, the hunger, the residual ether, and the fact that her bare feet were making contact with unheated concrete at fifty-one degrees.

She was hurting.

She wasn't stopping.

I tapped the keyboard. The schematic expanded, revealing the full topology of Level 3--branching utility passages, ventilation junctions, server alleys designed to look organic but scripted as carefully as a behavioral psychology maze. Every dead end deliberate. Every open passage leading somewhere I wanted her to go.

The rat doesn't know the maze has a solution. But the maze always has one, because a maze without one teaches nothing.

On Screen 3, the live feed showed her moving through C-Corridor. Diagnostic LEDs behind mesh cage doors cast her face in alternating blue and amber. Her expression was operational--jaw set, eyes sweeping systematically, right hand trailing the wall at shoulder height, fingers brushing surfaces with the indexing touch of a blind person reading architecture by texture.

She was building a map.

Of course she was.

I could have sealed every door. Dropped the temperature to forty degrees. Piped my voice through the speakers and told her to go back. For a flickering instant, I felt the impulse--to end the experiment early, take the data and call it enough.

But that wasn't the point.

The point was to see what she did when variables exceeded her model. A woman who breaks under pressure has architecture that's load-bearing only in optimal conditions. A woman who adapts--who maps the maze while her feet go numb, who reads cable runs for structural intelligence while her body screams for warmth--her architecture is self-reinforcing.

I needed to know which one she was. Not believed. Knew.

She reached the junction at B-7.

I watched her stop. The pressure-differential readout shifted--she'd leaned against the ventilation housing, pressing her body against the sheet-metal casing at different angles. Sustained. Systematic. Methodical. She was testing mounting bolts. Measuring flex tolerance. Probing the resonant frequency of the ductwork.

She wasn't looking for a way out. The ducts were twelve inches in diameter--she was a trained physicist, she knew the geometry was impossible.

She was looking for a secondary acoustic transmission path. A way to push sound through the building's infrastructure to the surface, past the dampeners, past the insulation, past the bedrock.

She was still trying to talk to the world I had taken her from.

Something moved through my chest. A tightening behind the sternum I recognized and despised. Not anger. Something closer to awe--the involuntary response of a builder who discovers a flaw in his design caused by an intelligence he underestimated.

The trick wouldn't work. The dampeners absorbed anything below ninety decibels. But the fact that she'd walked a cold corridor in a linen shift with no food and identified a transmission vector my own security consultant had missed during Phase 2 review--that told me something biometric data never could.

I leaned forward and keyed the override. Fifty paces ahead, the hydraulic bulkhead at C-3 slid shut--silently, a two-ton steel door closing like a whisper. Then I sealed B-9 behind her. Then D-1.

On the wireframe, her options contracted. Three corridors became two.

Two became one.

She reached the sealed bulkhead. On camera, she placed her palm flat against the cold steel and held it for four seconds. Tilted her head--listening, always listening. Then turned without urgency, without panic, and began walking back.

Then she stopped.

She was standing directly beneath the micro-dome camera at junction C-7. She looked up. Not searching--she knew exactly where it was. Had known since the first time she walked this corridor.

She looked into the lens.

And she smiled.

Not defiance. Not fear or submission. The smile of someone who has completed a calculation and found the answer satisfying. Small, controlled, aimed with the specificity of a laser at the person on the other side.

My hand stopped on the keyboard.

My breathing was faster than it should have been. My own heart rate--tracked by the sensor in the command chair's armrest, a feature I'd installed as a diagnostic tool and now regretted--read ninety-one.

Elevated. Measurably, documentably elevated by a woman standing barefoot in a corridor smiling at a camera she shouldn't have been able to find.

She held the smile five seconds. Then turned her back on me and walked deeper into the dark.

I watched the red dot resume its steady trajectory. Step by step. Measured. Unhurried. Mapping the maze while the maze tried to map her.

She had walked into a dead end, found it sealed, and smiled.

I closed the override menu. Left D-1 unlocked.

Not because I wanted to give her a way out. There was no way out. But because the experiment required she choose to keep walking, and a cornered subject is a subject who has stopped generating data.

The red dot moved. The maze hummed. And somewhere in the deep, unmonitored architecture of my own psychology, a load-bearing wall developed its first hairline crack.