The tremor began as a whisper. Finnian felt it first in his teeth, a low thrum against bone. Then his fingertips tingled, a familiar pull he’d come to dread. It wasn't the steady pulse of the city's ley lines. This was a ragged beat, a skip. He pushed away from the drafting table. Ink smudged his wrist. The half-finished chart of the North Reach lay forgotten. Outside the window, Thalassia chugged along. Steam hissed from pipe vents. The clang of the smithy carried on the wind. Normal sounds. But beneath them, a growing discord. He closed his eyes. The city's veins flared into perception. A network of dim glows. Most pulsed with a reassuring rhythm. But a deeper current, far to the west, near the old fishing docks, writhed. A sickly, green-black haze clung to it. Feeding. Draining. His stomach tightened. This wasn't a minor fluctuation. Someone was actively pulling at the city's lifelines. Or something. He shoved on his worn leather jacket. He snatched a coil of rope and a flint-and-steel from his cubby. No time for breakfast. No time for excuses. --- The bell above Tiber's door jingled, a reedy sound lost in the shop's dusty quiet. Old Man Tiber didn't look up from his eyepiece. He was hunched over a brass astrolabe, polishing its intricate gears. The scent of old paper and pipe tobacco hung heavy. "Trouble, boy?" Tiber's voice was gravel, barely a murmur. Finnian leaned against a stack of rolled maps. "The Docks. I felt it. Something deep." Slowly, Tiber straightened. His eyes, usually sharp, held a distant concern. He wiped his hands on a greasy rag. "Thought you might. Been feeling it for days. A low hum that grinds the teeth. Not natural." Tiber gestured to a stool. Finnian sat. The old man pulled a tarnished kettle from a hotplate. "The Heartstone of the Docks," Tiber said, pouring steaming ginger tea. "One of the old anchor points. Lies beneath Pier 17. Been neglected for decades." Finnian took the mug. Its warmth was a small comfort. "What's happening to it? It felt… hungry." Tiber sighed, a long, rattling breath. "Someone's feeding it the wrong diet. Or bleeding it dry. Kael's been buying up those old waterfront properties. Quietly. Too quietly." Kael. The name curdled Finnian's tea. Industrialist, councilman, and a snake with an unnerving interest in Thalassia's ancient foundations. Finnian had brushed with his men before. "He's digging for something, Finnian. Or siphoning. He knows about the lines, or he suspects. He's trying to weaponize them, I swear it." Tiber's gaze was direct, unwavering. "You need to go. Find out what he's doing. See if the Heartstone can be… stabilised." Stabilised. A monumental task. He'd only ever nudged small eddies of energy. This was a core current, a foundational support. "Pier 17 is condemned," Finnian said, stating the obvious. "Crumbling apart. Guards patrol those ruins now. Kael's guards." "Exactly," Tiber grunted. "Meaning he doesn't want anyone seeing what he's up to. There's an old service tunnel. Not on any current map. Access point is behind the old Fishmonger's Guild Hall, south wall. Look for the rusted grate, half-buried in the mud." Tiber drew a rough sketch on a scrap of parchment. A crude map of forgotten passages. "Be careful, Finnian. If Kael catches you… he won't ask questions. He'll just bury you with the secrets you uncover." Finnian nodded, a cold resolve settling in his gut. The urgency in Tiber's eyes was clearer than any map. He gulped the tea, its ginger sharp on his tongue. --- The Docks were a cacophony. Seagulls cried overhead. Whistles shrieked from distant steamers. The smell of salt, fish, and coal smoke filled the air. Finnian moved like a shadow. He skirted crates, avoided porters straining under heavy loads. His eyes scanned. Always scanned. For Kael's men. For the flicker of a disturbed ley line. The city's energy was frantic here. Jumbled. Like a knot of tangled string. He felt eddies of raw power swirling, uncontrolled, bumping against the metal hulls of ships. He kept to the narrower alleys, where steam-powered cranes groaned and rusty chains clanked. The newer sections felt too exposed. Too many eyes. He passed the Fishmonger's Guild Hall. Its facade was cracked, its windows boarded. A relic, like so much else in Thalassia. He found the south wall. Weeds choked the base. Mud clung to everything. His boot scraped against something hard. He knelt, digging with his fingers. Rust flaked away. A grate. Barely visible. It was heavy. The iron groaned as he pulled. With a wet suction sound, it gave way. A dark, narrow opening lay beneath. The smell of damp earth and decay wafted out. He peered inside. Darkness swallowed his gaze. He felt the cold breath of the tunnel on his face. The disturbed ley line pulsed stronger now, directly beneath him. A sickly green, almost black. It was like a wound, festering. He squeezed through the opening. The grate clanged shut behind him. He fumbled for his flint-and-steel. A spark. A small, guttering flame. The passage was claustrophobic. Rough-hewn stone pressed in. The air was thick, heavy with the scent of stagnant water. He moved carefully, his boots squelching in mud. His geomancy prickled. The line pulsed, a dull ache just beyond his reach. It led deeper, twisting and turning like a worm through the earth. He navigated by the feeling, by the faint shimmer of the ley line's corruption. The passage opened into a larger chamber. A cistern, perhaps, long dry. Ancient carvings adorned the walls. Weathered symbols he didn't recognise. Not Thalassian. Older. Pre-Cataclysm, perhaps. The air here was colder. The distant rumble of the docks above was muffled. Only the drip of water broke the silence. He moved past the cistern. Another tunnel. This one angled sharply downwards. A steeper descent. The ley line's troubled current grew more intense. He began to hear it. A faint, rhythmic hum. Not the soft song of the ley lines. This was mechanical. Grinding. He crept forward, his small flame casting dancing shadows. The tunnel widened again. He flattened himself against the cold stone. A vast cavern stretched before him. And in its heart, like a dying star, pulsed the Heartstone. It was a monolith of rough-hewn obsidian, taller than two men, sunk deep into the earth. It glowed faintly, a struggling emerald light. But the light was choked. Wrapped around the Heartstone, like a parasitic vine, was a construct of brass and wrought iron. Pipes snaked from the monolith, leading to a massive steam engine that chugged and hissed in the corner of the cavern. Gears spun. Pressure gauges quivered. This was Kael's work. A siphon. Drawing the very lifeblood from the Heartstone. The green-black haze he'd felt across the city was concentrated here, pouring from the construct, feeding something unseen. Or being channeled somewhere. Figures moved amidst the machinery. Two men, heavily built, their faces obscured by the dim light and the steam. They wore the dark, riveted leather of Kael's private security. Finnian's breath hitched. He had to stop this. But how? He was one man, unarmed, against two armed guards and a monstrous machine. He felt the Heartstone cry out. A silent scream that rattled his bones. The corrupted energy flared, stinging his senses. It was weakening. Rapidly. He could not wait. He pressed his palm against the rough cavern wall. He focused. He needed to create a diversion. Something to draw their attention away from the siphon, if only for a moment. He pushed. A small, focused surge of geomantic will. He aimed for a loose section of rock directly above one of the guards. A fine crack appeared. Dust sifted down. One guard looked up, wiping his brow. Finnian pushed harder. The crack deepened. A small shower of pebbles rattled down. The guard cursed. The other guard, closer to the siphon, turned. "What was that, Roric?" Roric peered into the darkness above. "Sounded like… loose rock. Damned old tunnels." Finnian poured all his concentration into the fissure. The rock groaned. He felt the ley lines around him protesting, straining against his crude manipulation. He needed more. A larger piece. A distraction that would last. He reached for a deeper current, one he'd only ever felt in theory. The cavern trembled. A louder groan echoed. A larger slab of rock detached itself, crashing onto the cavern floor just meters from Roric. Dust exploded upwards. "What in the blazes—" Roric yelled, drawing a heavy cudgel. He squinted into the gloom, looking for the source. The other guard, closer to Finnian's hiding place, drew a pistol. "Someone's here!" Finnian swore under his breath. He'd overdone it. He was exposed. He flattened himself against the wall, but his heart hammered like a drum. Heavy footsteps. The clack of a gun hammer. He felt the shifting of the ancient stones around him, a warning. The Heartstone’s weakened pulse felt like a final gasp. The gun barrel passed within inches of his head. He held his breath. He could smell the guard’s stale sweat. He knew what he had to do. He couldn’t let them find him, not yet. Not when the Heartstone was so vulnerable. He had to stop the siphon. He lunged. Not at the guard, but towards the Heartstone, towards the complex of pipes and brass, hoping to reach the central connection, hoping he could sever the siphon with one desperate geomantic push, before the guard's shot echoed through the chamber, and before the city above collapsed around them all.

The Murmur Underneath