Mara stood still, the breath against her neck was a heavy pressure. It wasn't a trick of the mind or a whisper from the "Voice." It was the respiration of something with lungs, standing in the sliver of space between her back and the chair.
Her eyes remained fixed on the reflection.
The window was no longer showing her dorm. It was showing the Lab. White, sterile, and blinding. The figure behind her clad in a lab coat that looked more like a shroud, held the surgical shears with the practised grace of a craftsman.
A tool for a specific job.
Step three, the voice whispered. Physical. Grating.
Mara's fingers curled into the wood of her desk. She didn't turn. To turn was to acknowledge the intruder's reality, and Mara Kline didn't acknowledge anything she couldn't categorise.
"If this is step three," Mara said, her voice a low, steady blade, "then I missed step two."
The silence that followed wasn't empty. It was hungry.
"You were never meant to see step one," the thing breathed.
Mara's jaw tightened. "Then this isn't a sequence. It's a correction."
A pause. Then, the reflection flickered, a digital glitch in a biological world. The Lab tiles stuttered, momentarily revealing her unmade bed and the posters on her wall before snapping back to the clinical white.
"This isn't real," Mara said, testing the boundaries of the space.
Faint, dry amusement drifted past her ear. "You say that like it changes the outcome."
Mara's mind recalibrated. The reflection wasn't a mirror. It was an overlay. Two realities fighting for the same coordinate in space. And she was the prize.
"If you wanted me dead," Mara continued, "you wouldn't be explaining the protocol."
"You think this is about your life?" The figure in the glass leaned in closer to her reflection's ear. The shears glinted. "Closer."
Mara moved.
Not away. Forward.
One sharp, controlled step toward the desk. The pressure behind her evaporated instantly. The temperature in the room rose five degrees.
She spun around.
The room was empty. Her bed was messy. Her books were stacked. The air was still.
But the laptop screen was screaming in silence.
LOOK AT THE REFLECTION.
Mara didn't look at the window. She looked at the laptop's black, glossy bezel.
"Step three," she murmured. "Excision."
Removal. The cutting away of the diseased or the unnecessary.
"Lila wasn't just killed," Mara said to the empty room.
No, the internal Voice returned, sounding almost mournful. She was processed.
"The Dead Variable," Mara whispered. "She became a flaw in the system. So the system excised her."
Her eyes drifted toward the door. She didn't think; she acted. She crossed the room in three strides and gripped the handle.
It didn't budge.
She hadn't locked it. The lock hadn't even clicked. It was simply… solid. Part of the frame.
"Step four," Mara said, her voice finally betraying a tremor.
Containment.
The word felt like a coffin lid closing.
Her phone shrieked on the desk, the vibration rattling the pens in her holder. She lunged for it.
ADRIAN COLE.
She swiped the screen. "I'm locked in. Cole, the door is—"
"Mara, get out. Now." Cole's voice was a jagged mess of static and panic.
"I told you, it's locked."
"Listen to me," Cole barked. "We just got the scrubbed footage from the Annex. From the moment before Lila died."
Mara leaned her forehead against the cool wood of the door. "And?"
A long, suffocating pause.
"There were two of you, Mara."
Mara's grip tightened until her knuckles turned white. "I know. I saw a figure. I told you—"
"No," Cole interrupted, his voice shaking. "The second person in the hallway… the one who led Lila into the bathroom… it was you. Same coat. Same hair. Same walk. You were standing right there, Mara. You watched yourself kill her."
The world tilted.
Mara's gaze drifted slowly, inexorably, toward the window.
The reflection stared back.
It was perfect. It was her. Every strand of hair, every line of her face.
Then, the reflection smiled.
The movement was a fraction too wide, revealing too many teeth. It stayed in the smile a second too long.
Then, the reflected Mara stepped forward.
She didn't move deeper into the glass. She moved out.
Her hand long, pale, and solid, pressed against the surface of the window from the inside. The glass didn't break. It rippled like water.
A foot stepped onto the dorm carpet. Then a shoulder.
Mara's phone felt like a lead weight. She couldn't breathe. She couldn't scream.
The thing that looked like her stood in the centre of the room, smoothing its coat. It looked at the locked door, then back at Mara with eyes that were ancient and hollow.
"Mara?" Cole's voice was a tinny scream coming from the phone. "Mara, answer me! Who is in there with you?"
The double reached out, its fingers grazing the phone in Mara's hand.
Mara's lips parted, but no sound came out. Her throat felt as if it had been stitched shut.
The double took the phone gently from her paralysed grip and held it to its own ear. It leaned in, its face inches from Mara's, and spoke into the line.
"I'm right here, Adrian," the thing said in Mara's perfect, melodic voice. "I've always been right here."
The double reached out a hand and covered Mara's mouth.
"Step four," it whispered.
"Replacement."
The line went dead.