Chapter 2 - The Logic of the Grid

The residential district of Grunewald was designed to prevent people from seeing into one another’s lives. The houses—mostly large, turn-of-the-century villas built by bankers and industrialists—were set back from the quiet, cobblestone streets behind high brick walls, thick hedges of rhododendron, and wrought-iron gates that required a digital code to open.
Thomas Brand parked his old Mercedes fifty meters from Gero Müller’s gate, under the deep shade of a lime tree.
He did not turn off the engine immediately. He sat in the warm cabin, the smell of diesel and old leather surrounding him, and pulled Beate’s phone from his pocket.
The screen illuminated. The video file was ready.
He pressed play.
For fifty-six seconds, Thomas Brand did not move a single muscle in his face. His breathing remained regular—sixteen breaths per minute, the standard recovery rate for a infantryman under light load.
On the small screen, the nursery was painted a soft, neutral cream. A pristine white crib sat in the corner, its slats casting long, neat shadows across the parquet floor under the morning light. In the center of the frame, Beate was on her knees, her hands clasped around her stomach, her head tucked toward her chest. Gero stood over her, his blue linen shirt perfectly pressed, his right arm rising and falling with the steady, unhurried rhythm of a man splitting kindling.
One.
Two.
Three.
The sound of the leather belt hitting her back was a wet, heavy slap that the small microphone in the camera picked up with terrifying clarity. After the twelfth blow, Beate’s body gave a small, violent jerk, her knees sliding two inches across the floor. Gero stopped, adjusted his grip on the leather, and continued.
Thomas Brand closed his eyes.
He did not feel anger; anger was a hot, erratic emotion that interfered with target acquisition and peripheral vision. He felt a profound, icy clarity.
In the army, they taught you that every problem had a structural solution. If a bridge was compromised, you did not shout at the river; you calculated the load-bearing capacity of the remaining supports, identified the point of failure, and applied the necessary counterforce.
Gero Müller was a point of failure.
Thomas put the phone back in his pocket, turned off the engine, and stepped out into the humid July afternoon.
The gate to the villa was closed, its small brass intercom polished to a high shine. Thomas did not press the button. He reached into his coat pocket and pulled out a small, heavy iron key—the spare key Beate had given him two years ago, before Gero had suggested that "for security purposes," they should change the locks to a biometric system.
Gero had changed the locks on the front door, but he had forgotten the small utility gate at the back of the garden, where the oil delivery pipes entered the cellar.
Thomas walked down the narrow gravel path between the high hedge and the brick wall, his boots making no more noise than the wind through the leaves. He opened the utility gate with a soft, rusted click, stepped into the shadow of the house, and entered the cellar.
The cellar smelled of dry concrete, laundry detergent, and Gero’s expensive wine collection. Rows of Riesling and Bordeaux sat in custom-built pine racks, their labels clean and white under the low-voltage halogen lights.
Thomas walked up the stone stairs to the ground floor, his eyes scanning the architecture of the house.
It was too large. Too clean. It had the sterile, unlived-in look of a high-end furniture showroom. There were no photographs of Beate’s family on the walls; there were only large, black-and-white prints of architectural details—arches, columns, steel girders—and a framed certificate from Gero’s golf club.
He walked up the grand oak staircase to the first floor.
The master bedroom was at the end of the hall, its door double-width and made of heavy, solid walnut. Inside, the bed was made with white linen sheets, pulled so tight they showed no wrinkles.
On the floor beside the bed, near the edge of the wardrobe, was a dark, irregular stain about the size of a saucer. It had soaked into the oak parquet, turning the light wood a dull, brownish-black.
Thomas knelt beside the stain. He touched it with his middle finger. It was dry, but the wood fibers had swollen slightly where the liquid had been absorbed.
Beate’s blood.
He stood up, walked to Gero’s wardrobe, and opened the door.
The smell of cedar and English lavender came out. Inside, forty suits hung on custom wooden hangers, arranged by color from light gray to midnight blue. Below them, thirty pairs of shoes sat in individual cubbies, their leather polished to a high, waxy shine.
On a brass hook near the ties hung the belt.
It was made of thick, dark brown bridle leather, three centimeters wide, with a solid brass buckle that had been polished until it looked like gold. The leather near the buckle was supple and worn, but the tip of the belt—the part that Gero had wrapped around his fist—was stiff, scarred with small, dry cracks where the material had been stressed.
Thomas reached out and took the belt off the hook.
He did not put it in his pocket. He held it in his right hand, feeling its weight, its balance. It was a well-made tool.
He walked down the hall to the room that was to be the nursery.
The room was empty except for the white crib, a changing table, and a plush gray armchair in the corner. In the high corner of the ceiling, where the plaster met the molding, a small white plastic dome was mounted.
The camera.
Thomas pulled a wooden chair from the hall, placed it under the camera, and climbed up.
He did not tear the unit down. He carefully disconnected the power cable from the back of the white plastic body, then extracted the small micro-SD card from the slot on the side. He placed the card into his leather wallet, reconnected the power cable so the small red status light began to blink again, and stepped down.
He walked back to the bedroom, took two of Beate’s large travel suitcases from the top of the wardrobe, and began to pack.
He did not pack her expensive dresses—the ones Gero had bought for her to wear to his corporate dinners. He packed her old flannel shirts, her comfortable maternity trousers, her books on medieval German literature, and the small, silver-framed photograph of her mother that had been hidden behind the towels in the linen closet.
He worked with a quiet, mechanical efficiency, his movements silent and fast.
Within forty minutes, the two suitcases were packed and zipped.
As he closed the lock on the second bag, he heard the sound of a car engine in the driveway.
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It was not the high, modern purr of a German luxury sedan. It was the heavy, low rumble of an eight-cylinder engine.
Thomas stood in the center of the master bedroom, the dark brown leather belt still held in his right hand, and waited.