The maintenance tunnels beneath the old factory district were a graveyard of forgotten infrastructure---pipes that hadn't carried water in decades, cables that no longer connected to anything, and the constant drip of condensation that echoed through the darkness like a mechanical heartbeat. Kayden moved through the blackness with his thermal vision painting the world in shades of blue and orange, Eva's hand gripping his chrome wrist as she followed close behind.
Zero rode in Eva's jacket pocket, its optical sensors dimmed to conserve power, only the faint glow of its status light indicating it was still monitoring their surroundings. The little storm rat had gone quiet after the fight---processing, perhaps, or simply recovering from the shock of being that close to Black Claw technology.
They walked for twenty minutes before Kayden found what he was looking for: an old pumping station, long abandoned, with a dry reservoir that offered concealment and only one entrance. He guided Eva inside and helped her settle onto a pile of old machinery components, his chrome fingers surprisingly gentle despite their size.
"We need to talk about what happened back there," Eva said, pulling out her diagnostic scanner. "The chip tried to override you during the fight. I saw it---the signal frequency spiked right before your arm started shaking."
Kayden nodded. He sat down across from her, the chrome of his left leg catching what little light filtered down from a grate above. His chest plate was badly damaged from Claw's attack---deep gouges in the alloy, one hydraulic line partially severed, coolant seeping from a c***k near his shoulder.
"Let me look at that," Eva said, moving to his chest. Her fingers found the damage with practiced efficiency, pushing aside plating and exposed wiring to assess the extent of the trauma. "This isn't as bad as the shoulder was, but it's close. Claw knew exactly where to hit you. He's fought beside you before, hasn't he?"
Kayden blinked once. Yes.
"An old teammate?"
Blink once.
"Someone who hates you?"
Blink once. Then twice. Yes and no. The distinction was too fine for simple blinking.
She worked in silence for a while, her tools clicking against chrome and alloy. Kayden watched her face in the dim light---the furrow of concentration between her brows, the way she bit her lower lip when she encountered a particularly difficult repair. She had fixed him once, in a garbage heap, with nothing but salvaged parts and stubborn determination. Now she was doing it again, in the dark, with less equipment and more danger.
"The chip," Eva said eventually, not looking up from her work. "I need to understand it better. Every time it activates, it leaves a signature---a specific electromagnetic frequency that I can detect with the right equipment. The spike I saw during the fight was... wrong."
She pulled out her data pad and showed him a graph. The waveform on the screen was jagged, erratic, nothing like the smooth sinusoidal pattern she had recorded during Kayden's early days in the workshop.
"Normal suppression chips operate on a single frequency," she explained. "They send a constant, steady signal that overrides the subject's autonomous nervous system. But yours is different. It has multiple bands---it can switch between frequencies depending on what they want you to do. When they wanted you to kill, it probably used one band. When they wanted you to obey, another. And when you tried to fight back---"
She pointed to a sharp spike on the graph. "This. This is the override band. The one that tries to seize control of your motor functions. I saw it spike right before your chrome arm started trembling."
Kayden stared at the graph. He had felt it---the chip trying to wrestle control away from him in the middle of combat, his own limbs threatening to turn against him at the command of a device he couldn't remove. If Eva hadn't struck Claw when she did, he might have been forced to watch his own hands kill her.
"Can you block it?" he wrote on the floor.
Eva was quiet for a long moment. When she spoke, her voice was careful, measured. "I might be able to build a signal jammer. Something that would disrupt the chip's communications with its control center. But there's a problem."
She pulled up another image on her data pad---a schematic of the chip embedded at the base of Kayden's skull. It was a tiny thing, no larger than a thumbnail, bristling with micro-needles that pierced directly into his spinal column. The precision of the engineering was horrifying.
"The chip isn't just receiving commands," Eva said. "It's also transmitting. It's sending data back to Black Claw---your location, your vital signs, your neural activity. When you fought Claw, the chip would have registered that as a behavioral anomaly and transmitted a distress signal to the nearest Black Claw relay."
Kayden's organic hand clenched. That explained the timing. Claw hadn't been on a routine patrol. He had been responding to a location ping from the chip itself.
"The signal jammer would stop incoming commands," Eva continued, "but it wouldn't stop the outgoing transmissions. Black Claw would still know roughly where you are. And more importantly---" she looked at him with an expression that was equal parts scientific curiosity and genuine concern---"the chip has a failsafe. If it detects an attempt to interfere with its signals, it can trigger a neurological event."
She didn't need to explain what that meant. Kayden had seen the failsafe in action---during his years in the facility, he had watched other assets convulse and collapse when their chips detected tampering. Some had died. Others had been reassessed and returned to duty, permanently diminished.
"So if I try to block the chip, it might kill me," he wrote.
"Maybe," Eva admitted. "Or maybe it just knocks you out long enough for them to come collect you again. I don't know enough about the specific design to say for certain."
She set down her tools and looked at him directly. "I need to study the chip more closely. I need to find its weaknesses before I can build anything that will neutralize it without killing you in the process. But that means keeping you alive and close enough to monitor---and keeping Black Claw off our trail long enough for me to figure this out."
Zero chose that moment to emerge from Eva's pocket, climbing onto her shoulder and projecting a new holographic display. This time it wasn't a map of the district. It was a document---encrypted, with a header that bore the faded logo of the Ares Corporation research division.
"Zero found this in the Black Claw drone's data burst," Eva said, scrolling through the files. Her eyes widened as she read. "It's a general alert. They're recalling all patrol units to base. And there's a priority notice---" She stopped. Read again. Looked at Kayden.
"Asset K-7 is not considered a standard recovery case. Priority has been elevated to Alpha-Seven. All available units are to assist in retrieval. Termination of the asset is authorized if capture is not achievable."
She set the data pad down slowly. The word termination hung in the air between them like smoke.
"They're going to send more people," she said. "More than Claw. And they're not going to ask questions or negotiate. They're going to put a bullet in you and drag what's left back to the lab."
Kayden stood up. His chest protested, but he ignored it. He walked to the tunnel wall and placed his chrome palm against the cold, damp concrete. Above him, somewhere in the maze of the Rust Belt, Black Claw was mobilizing. The entire division was being turned toward one goal: finding him and eliminating the problem he represented.
He thought about running. It was what he was best at---evasion, concealment, the endless patience of a predator that knew it could not be seen until it was too late. He could disappear into the deeper sectors, lose himself in the mountains of electronic waste where no patrol could follow.
But then he looked back at Eva, this stubborn woman who had refused to leave him in the garbage heap, who had fought an augmented killer with a piece of conduit, who was now sitting in a dark tunnel with nothing but her tools and her determination, trying to save a monster because she believed his heartbeat meant something.
He walked back and sat down beside her.
I'M NOT LEAVING, he wrote.
"That's not your choice to make," Eva said quietly. "They'll kill you if you stay."
THEY'LL KILL ME IF I RUN. AT LEAST THIS WAY SOMEONE WHO CARES IS HERE.
The words were simple, blunt, more honest than anything he had communicated since waking in her workshop. Eva read them twice, her copper eyes bright in the darkness.
"You're an i***t," she said.
HEAR THAT BEFORE.
She almost smiled. Almost. "Then let's make sure you live long enough to hear it again."
She pulled her tools back out and returned to work on his chest, her hands steady and sure. Zero settled between them, projecting a soft blue light that kept the darkness at bay.
In the tunnels beneath New Detroit, a man who had been a weapon and a woman who had been hiding both began to plan their next move.