The sounds began in the silence.

Not a crescendo, but an infiltration—a soft, relentless scratching that seemed to originate not in the room around her, but inside the canals of her own ears. Cassandra lay perfectly still in the dark of her graduate housing apartment, the thin blanket a weightless shroud over her slender form. Her eyes were open, fixed on the ceiling’s vague shadows. She was awake. She had been awake for the last forty-seven minutes, according to the pale green numerals on the bedside clock. And yet the sounds persisted.

Scritch-scritch. Scrape. A dry, multitudinous friction, like the mandibles of a thousand insects working over stone. Then a softer, wetter gnawing. It was sound without image, a darkness given voice. It filled the hollows of her skull.

This was the seventh night.

The first time, she had blamed it on stress—the looming shadow of her dissertation defense, the pressure to crystallize her thoughts on phenomenological ethics into something coherent, bulletproof. She’d taken a sleeping aid. It had muffled the sounds but not erased them; they’d simply become the texture of her drugged dreams, a background hum to surreal visions of empty libraries and endless footnotes.But tonight was different. Tonight, the sounds… resonated.

A slow heat began to uncoil deep in her belly, a liquid warmth that felt separate from her, a thing with its own intent. It spread, viscous and insistent, tracing the lines of her lower abdomen. Her breath hitched. She pressed her thighs together under the blanket, a reflexive gesture of containment. The motion sent a shocking, electric pulse through her nerves. She felt the smooth cotton of her pajama pants against her skin, and the sensation was suddenly, unbearably acute.

This is not me, she thought, her mind a clear, cold pool above the rising warmth. This is physiological nonsense. A stress response.

Yet her body was not listening. The scraping, gnawing sounds seemed to find an echo in her own blood. Her nipples tightened against the soft fabric of her tank top, a sharp, almost painful awareness. Between her legs, a low, steady throb had begun, keeping time with a pulse she could now feel in her throat.

Cassandra, the rational one. Cassandra, who could deconstruct Kantian imperatives with serene precision. She felt a flush of shame—hot, prickling—across her chest and neck. It battled with the warmth, creating a dissonant, thrilling friction of its own. She was being aroused by a noise. By a sound of imagined, jointed limbs moving through infinite dark.

A memory surfaced, unbidden: a boy from her undergraduate metaphysics seminar, his hand accidentally brushing hers as they reached for the same library text. The sudden, dizzying drop in her stomach. She had carefully filed that feeling away, analyzed it as a simple hormonal spike, a Darwinian glitch. It had no place in the architecture of a considered life.

But this… this was not a memory. It was a presence.

A phantom pressure bloomed against her lower back, as if a large, warm palm were splayed there, holding her down. Her hips gave a minute, involuntary arch off the mattress. The movement was shameless. It shocked her. A soft gasp escaped her lips, swallowed by the whispering dark of the room.

The gnawing sound intensified, not in volume, but in texture. It felt like it was inside her teeth, vibrating in the marrow of her jaw. The heat between her legs crested, a wave gathering itself with terrible patience. She was wet. She could feel the slickness, a humiliating, undeniable truth. Her hand, trapped at her side, twitched. The part of her that was Doctorial Candidate Cassandra Yi observed this with detached horror. The other part—the part that was just skin and nerve endings and animal need—willed that hand to move, to slide down, to touch.

She fought it. She clenched her fists, her short, neat nails digging into her palms. The pain was a clean, sharp anchor. I am in control. This is a hallucination. A somatic symptom.

But the anchor dragged. The phantom hand on her back slid lower, cupping the curve of her buttock, possessive and knowing. A sound—a low, ragged moan—broke from her throat. It was hers. It was alien.

Her resistance shattered.

Her own hand moved, not as a decision, but as a surrender. The blanket was pushed aside. The cool air of the room kissed her feverish skin. Her fingers slipped beneath the waistband of her pajamas, past the thatch of fine, dark hair, and found the swollen, slick heat of herself. The contact was a lightning strike.

Her back bowed. Her head pressed hard into the pillow, mouth open in a silent cry. The gnawing, scratching sound was no longer outside. It was the rhythm of her own frantic pulse, the frantic scrape of her thoughts dissolving into sensation. She touched herself with a clumsiness that was utterly new, a frantic, seeking pressure. It was not enough. It was too much. Images flashed behind her clenched eyelids—not of a person, but of movement: a sinuous, endless undulation in perfect darkness, a thousand articulated points of contact, a surrender to a will that was vast and hungry and other.

The orgasm, when it tore through her, was silent and vast. It was not pleasure as she understood it. It was an annihilation. A small, private death. Her body seized, every muscle rigid, as wave after wave of convulsive release emptied her mind of everything—of philosophy, of identity, of fear.

For a long moment, there was nothing. A perfect, blank quiet.

Then, slowly, the world seeped back in. The feel of the damp sheets beneath her. The chill of sweat cooling on her skin. The mundane hum of the refrigerator in the next room.

And the sound.

It was still there. Fainter now, receding like a tide, but unmistakable. A faint, insectoid scritching, deep in the bones of the building. Or deep in her.

Cassandra lay perfectly still, her hand withdrawn, resting limp on her stomach. Her breath came in shallow, ragged pulls. Her cheeks were wet; she hadn’t realized she’d

been crying. The afterglow hummed in her veins, a shameful, delicious warmth utterly at odds with the ice now forming in her chest.

She had orgasmed to a noise from a dream. A noise that felt like the universe itself, chewing.

She sat up slowly, her movements brittle. She swung her legs over the side of the bed, her feet finding the cool wooden floor. The apartment was dark, lit only by the faint glow of the city through the blinds. She was alone. She was always alone.

But as she sat there in the aftermath, the ghost of the sensation still dancing on her skin, a single, terrible thought crystallized with the clarity of a diamond forming under pressure:What if it’s not a dream?

And deeper, more terrifying:

What if it’s calling?

The scratching in the walls was not.