Riven Hale heard the signal before the system even realized it was there.
A single pulse—clean, deliberate—threaded through the station like a held breath in the dark. It wasn’t noise. It wasn’t interference.
It felt… intentional. And far too familiar.
He froze. The ambient machinery hummed in its usual sterile perfection, the rhythm almost masking the unnatural silence that followed. Almost. Riven tilted his head, listening with the focus of someone who had spent too long noticing things everyone else insisted weren’t real.
Most engineers trusted the system more than their own senses. Riven wasn’t “most engineers.” And lately, the gap between what he heard and what the logs showed had been widening in ways that left a quiet bruise under his ribs.
He stepped to the console, its screen washing his face in gentle green light:
—All systems stable
—No anomalies detected
—Data integrity: excellent
“Lies,” he murmured. “You’re too perfect.”
He tapped the spectral module. Flatline.
Environmental readings. Flatline.
Raw signal logs. Flatline.
Real systems didn’t look this clean—not unless something was scrubbing their fingerprints.
Riven leaned in, voice almost a whisper. “Where are you…?”
A soft chime sounded behind him.
“Report?”
Calyx Rowan stood in the doorway, posture straight enough to pass inspection, expression sharp enough to cut doubts in half. The crisp navy uniform suited him too well—like even the fabric knew better than to disappoint him.
Riven didn’t turn fully. “I heard something.”
Calyx checked the console with a bland, practiced neutrality that always irritated Riven more than open disbelief. “According to the system, nothing happened.”
“According to the system,” Riven said, “nothing ever happens unless it wants to be seen.”
Calyx’s jaw flexed. “We talked about this.”
“No,” Riven corrected softly, “you lectured, I ignored you, Command ignored me, and the system pretended it didn’t hear anything while absolutely hearing everything.”
“That’s not how systems work.”
Riven finally met his eyes. “I think that’s exactly how this one works.”
Calyyx exhaled—sharper than usual, but with a softness underneath it. “Look… Command flagged your last two reports. They want me to make sure you’re not—”
He hesitated.
“—overextending yourself.”
Riven looked away, jaw tight. “I’m not hallucinating signals.”
“I didn’t say that.”
“You implied it.”
Before Calyx could respond, Camera 4 flickered.
Not static.
Not a glitch.
Not noise.
A deliberate smear—one frame, precise and purposeful.
Riven lunged toward the console. “Did you see that?”
Calyx stepped closer, the controlled neutrality in his eyes cracking just slightly. “See what?”
Riven replayed the feed.
Frame by frame.
Perfect. Smooth. Sanitized.
Nothing but the matte corridor walls.
“Don’t do that to me,” Riven whispered.
“Do what?” Calyx asked—but his voice had lost its certainty.
Riven dove into the raw pixel buffer.
Code cascaded down the screen—until—
There.
A gap.
Between frames 4421 and 4422, a sliver of time simply… gone.
Not corrupted.
Not damaged.
Removed.
“Someone’s editing the feed,” Riven breathed.
For the first time since entering the room, Calyx didn’t argue. His shoulders squared, gaze sharpening—as if a gear inside him finally aligned with Riven’s.
“Run a real-time trace,” he said quietly.
Riven hesitated only because Calyx rarely stood on his side like this. Then he ran the command.
The screen blinked once.
A line of text flashed—too fast for any human eye except Riven’s:
UNRECORDED INPUT DETECTED.
Then immediately overwritten:
ALL SYSTEMS NORMAL.
Riven’s breath caught. “You saw that, right?”
Calyx nodded, almost imperceptibly. “Yes.”
“Then it’s not just me.”
The lights overhead flickered—once—like the station inhaled and held the breath.
Silence followed, deep and intentional.
Riven stepped back, tension threading through the air like static. Something was pressing against the walls. Testing them.
“You okay?” Calyx asked, tone softer than usual.
“No,” Riven said honestly. “Because it’s getting bolder.”
Calyx didn’t smile, didn’t mock him. He just watched Riven with a look that lingered a moment too long—something like concern, or something he didn’t have a name for yet.
“What do you think it is?” he asked.
“I don’t know,” Riven said. “But it’s not a malfunction.”
A low hum rolled beneath the floor.
Not part of the station’s rhythm.
A deliberate thrum—like a knuckle tapping metal.
Riven stiffened.
Calyx felt it too; Riven saw it in the tightness across his shoulders.
Then it stopped.
The monitors refreshed with cold, perfect calm:
NO ANOMALY DETECTED.
NO SIGNAL RECEIVED.
NO EVENT LOGGED.
Calyx exhaled. “I hate how calm the system sounds.”
“It only sounds calm when it’s lying,” Riven said.
He stared at the glossy console surface until his reflection came into focus—tense eyes, rigid shoulders, breath caught too shallow.
Because something had knocked.
Something learning to hide better than the system could reveal.
And next time…
it wouldn’t knock softly.