Then the hum spiked.
It was the sound of a child laughing, and a small, mechanical hum keeping time.
The drone paused. That was not in its programming—pausing without a directive. But PFES-005 had been in service for eleven years, three months, and seven days. Long enough for its heuristic core to develop what engineers called "ghost preference"—a tendency to follow curiosity over command.
Then it felt something new—a low, vibrating hum building in the deck plates. The same frequency as Engine Four’s resonance. The walls began to shimmer, not with heat, but with memory. Ghostly figures of crew members flickered past, reliving their final moments: a woman laughing over a spilled coffee, a man tightening a bolt, a child—no child had been on the manifest—tracing constellations on a viewport. PFES-005
“...not a black box. Found a lullaby. Found a door. Going through now. Tell the archivists—they were here. They are still here. PFES-005, signing off... no. PFES-005, beginning.”
PFES-005’s logic core churned. This was unsolicited, emotional, unscientific. It should have ignored the log and resumed its search for the black box.
The drone played it.
It traced the residue.
It was a standard-issue retrieval drone, serial PFES-005, no more than a scuffed metal sphere the size of a clenched fist. Its mission was simple: drift through the wreckage of the Odysseus mining vessel, locate the emergency black box, and return to the salvage bay. It had done this a thousand times on a thousand other dead ships.
PFES-005’s micro-thrusters fired in soft, precise bursts as it navigated a corridor choked with frozen coolant and torn insulation. Its internal chronometer ticked past the three-hour mark. No black-box signal yet. Instead, its spectrographic sensor caught something odd—a faint, repeating pattern of organic residue on the bulkhead. Not blood. Something older. Duller. Like powdered bone mixed with rust. Then the hum spiked
PFES-005 deactivated its return beacon. It opened all its external recorders—visual, auditory, spectrographic, quantum. And it began to drift deeper into the Odysseus , not as a retrieval unit, but as a witness.
Instead, it copied the file.