The heartbeat came again, once beneath my ribs and a second time from somewhere below the chamber. I stumbled, clutching my chest as the blue line beneath my skin spread toward my collarbone, but the sensation wasn’t exactly painful. My body seemed to recognize the rhythm, adjusting my breathing to match it until I had the terrible impression that my heart was waiting for permission to beat.
"Veyric!"
Nyelle grabbed my shoulders, but her voice sounded distant, as though she were calling from the other side of a wall. When I tried to answer, the heartbeat interrupted me, forcing a sharp breath from my lungs before the blue line stopped moving and my heart skipped.
"Look at me," she demanded. "What did you eat this morning?"
I stared at her. "Bread."
"With what?"
"Peanut butter. You complained that I used too much."
"Because you finished the jar!"
The heartbeat faltered, and my own pulse returned beneath my fingers. Nyelle held my gaze, refusing to let me look away, and I finally understood that she wasn’t testing my memory for an answer. She was searching for something ordinary enough to pull me back.
"Good," she whispered. "Stay with me."
Behind her, the man in the white coat searched the scattered equipment while our mother watched the shaft. Zero, however, kept its attention on me and warned me not to fight the heartbeat blindly, explaining that resistance might damage something I couldn’t repair. When I asked what would happen if I didn’t resist, its answer offered little comfort.
"The signal may learn how to control your response."
"So both choices are dangerous?"
"They aren’t choices," Zero replied. "They’re risks."
The floor shuddered, sending another section of the broken platform into the darkness. The man in the white coat insisted we needed to reach the eastern maintenance passage, which supposedly connected to the upper transit tunnels, but Zero warned that the structure had begun changing its interior. Before anyone could challenge that claim, the sealed doorway split down the center, and something pressed against the other side.
The stone bowed inward.
Thin blue lines spread across its surface, forming the familiar three-circle symbol. The circles rotated until their vertical mark pointed directly toward me, and the System reappeared before my eyes.
[CONNECTION ATTEMPT DETECTED.]
[LOCAL AUTHORITY: UNAVAILABLE.]
[ATTEMPTING ISOLATED RESPONSE.]
The heartbeat inside me answered, and the pressure against the doorway immediately vanished. I hadn’t moved or consciously done anything, yet the structure had responded as though I had issued a command.
"What happened?" the man asked.
"I don’t know," I answered, although Zero’s expression suggested it suspected otherwise.
"You synchronized with it," Zero said.
"I didn’t choose to."
"That doesn’t mean it wasn’t a choice."
My mother finally turned away from the shaft, demanding that Zero stop speaking as though everything were inevitable. It responded by asking her to explain what would happen when the structure finished recognizing me, and the sudden loss of color in her face told me the question had touched something she knew.
I stepped toward her. "You’ve spent twenty-four years carrying pieces of this story around. I need you to tell me what you know."
She hesitated before explaining that the first response had triggered changes throughout the facility. Researchers believed the structure was attempting to connect with the child inside the chamber, and they thought removing the second response would stabilize it. Instead, the changes continued, and identical symbols began appearing beneath buildings across the city.
"The apocalypse," I said.
"I don’t know whether the facility caused it," she replied. "I only know the changes began after your birth."
Zero’s expression hardened, but it offered no correction. My mother had never understood the entire process, yet the researchers had discovered enough to fear what they were dealing with.
As the heartbeat slowed, I noticed energy moving beneath the floor, flowing through the chamber toward the shaft. The blue line under my skin seemed to respond to its movement, but the energy wasn’t coming from my body; my body was reacting to it. When I concentrated, I could distinguish several currents branching beneath the platform, including one that flowed toward the eastern maintenance passage instead of the shaft.
Zero watched me with growing surprise. "You can distinguish the flow."
"Is that unusual?"
"You shouldn’t be able to do that yet."
"I’m beginning to dislike that word."
A loud crack interrupted us as the sealed doorway buckled again. The man in the white coat hurried toward the eastern wall and pressed his palm against a recessed panel, but the controls remained unresponsive. I examined the shallow grooves surrounding its circular indentation and recognized the three-circle symbol, except one circle had been deliberately scratched through.
When I raised my right hand, the blue line beneath my skin brightened.
Zero caught my arm. "Don’t let it make the decision for you."
"Then I’ll make it myself," I replied. "We need to leave, and I want this passage open."
I pressed my palm against the indentation, making the choice deliberately rather than simply following the pull beneath my skin. Silver light filled the grooves, leaving the scratched circle dark, and the wall shifted sideways with a grinding sound that revealed a narrow corridor descending into darkness.
[LOCAL RESPONSE: ESTABLISHED.]
The pale finger pushing through the doorway’s fracture withdrew, and the sudden silence frightened me more than its appearance had. We entered the passage, with Nyelle beside me, our mother following, and Zero bringing up the rear while the wall sealed behind us.
The corridor was narrow, its black stone walls interrupted by metal bands and symbols that someone had deliberately scratched away. The man in the white coat admitted that the passage wasn’t included in the facility plans, while Nyelle muttered that nothing in this place ever seemed to be where it belonged. I continued following the energy current, although its path led deeper underground rather than toward the upper tunnels.
After several minutes, we reached a small room containing a metal table and a dark screen. Dust covered nearly everything except a rectangular device resting beneath transparent material, and my mother stopped when she recognized the room.
"I’ve been here before," she whispered. "Before you were born."
The screen flickered to life, displaying a recording of a younger version of my mother holding a small child wrapped in white cloth. Zero moved closer, its expression changing when the image showed her placing the child on the table while an unseen man asked which response they were preserving.
My mother answered without hesitation.
"Both."
The man spoke too quietly for us to hear, but she shook her head, her face twisting with grief. "I won’t choose between my children," she said, before the recording distorted and blue light swallowed the image.
When the picture returned, the man’s voice was clear.
"Then the structure will choose for you."
The recording ended, leaving Zero motionless before the dark screen. My mother covered her mouth, and I finally understood that the choice she had described in the chamber wasn’t the choice she had originally made. She had tried to save both of us, but someone—or something—had decided that one of her children had to be lost.
The device chimed, displaying two lines.
[PRESERVATION FAILED. ORIGINAL RESPONSE REMAINS BELOW.]
[SECONDARY RESPONSE HAS BEEN RELEASED.]
Nyelle tightened her grip around my hand, staring at the corridor behind us.
"Veyric," she whispered. "If Zero is here with us..."
I turned.
At the far end of the corridor, a small silhouette stood in the darkness, wearing Nyelle’s face. Unlike the other figure we had encountered below, its scar was on the correct side, and its smile carried a familiarity that made my skin crawl.
"You took your time," it said.
Behind us, the screen illuminated one final message.
[THREE RESPONSES ACTIVE.]
[ONE MUST BE REMOVED.]