The Undertow / Season 1, Episode 7
Heartbeat of the Abyss
The hum of the fluorescent light buzzed overhead, a wasp trapped in glass, as Celeste Marrow hunched over the lab table at the Pelican Bay Marine Research Station. Her gloved hands trembled, not from the chill seeping through the cracked window, but from the thing in the petri dish. It pulsed—rhythmic, deliberate, like a heartbeat under oil-slick skin. She’d pulled it from the tide pool three days ago, a fragment no bigger than a dime, and now it spanned the dish, edges curling inward as if reaching for something it couldn’t name. The air smelled of brine and formaldehyde, sharp enough to sting her nose, and the linoleum floor under her boots felt tacky, like it hadn’t been mopped since the last storm. “Still moving, huh?” Her lab assistant, Tara, leaned over her shoulder, breath warm against Celeste’s ear. Tara’s voice was tight, the kind of tight that meant she’d rather be anywhere else. “That’s not... normal. Right?” Celeste didn’t answer right away. Her eyes stayed locked on the dish, on the way the thing shimmered under the light, not reflecting but absorbing, pulling the glare into itself until the edges looked wetter, darker. She could hear the faint slosh of it shifting, a sound like a tongue against teeth. “Normal’s relative,” she finally muttered, peeling off a glove to...