The white flour on the larder floor had turned into a fine, detailed map of thousands of tiny, herringbone trails. Imran Bell lay flat on his stomach, his elbows propped on a clean pine plank Eren Tal had laid down to keep his overalls out of the damp grease near the threshold. Through his three-inch jeweler’s magnifying glass, the world of the larder was neither messy nor terrifying. It was a marvel of living logistics.
Under the zoom of the lens, each beetle’s head became clear. They weren’t carrying food, nor were they gnawing at the wood of the floorboards. Clasped tightly between their curved jaw pincers were pale, oblong capsules that looked like tiny grains of unpolished rice, shimmering with a soft, semi-clear opalescence.
‘Look right here, Pella,’ Imran said. She gestured with the blunt end of his tweezers without shifting his gaze from the glass. ‘Don’t lean on the plank or you’ll shaking-shock them. Just bend your neck and look through the backup lens.’
Pella lowered herself onto one knee, the smell of pipe lime dust and cooling sourdough crust rising from the flat stone slabs. She peered through the second magnifying glass Imran had mounted on a said clearlybrass arm. The image snapped into focus: an adult beetle, its black hard shell scratched and dull from dragging itself through gravel, was holding a pearl-white sac nearly half the size of its own thorax.
‘It’s carrying an egg,’ Pella whispered. Her voice dropped into the quiet respect she usually reserved for Hal Rook’s old river charts.
‘Not just an egg,’ Imran corrected gently. ‘A mature brood capsule containing four to six baby larvae. See those faint dark spots through the outer membrane? Those are the eye clusters and jaw buds. They’re forty-eight hours from hatching.’
He moved the lens six inches down the pine plank, focusing on another insect, then another, then a cluster of four that had gathered in the sheltered lee of a baked-clay crock. Every single adult in the cluster held a matching semi-clear bundle in its jaws.
‘Eighty percent of this population are nurse workers,’ Imran said, pulling a notebook from his breast pocket and jotting down figures with a dark oak-ink pen. ‘In a standard detritivore nest, you only see five percent of the adults carrying brood at any given time, and only within the deep nursery galleries. To see eighty percent of the adults carrying viable eggs out in the open like this means one thing.’
Sister Merrow stood in the doorway, holding a basin of warm water and a scrubbing rag. ‘It means the nest is gone.’
‘It means the nursery heat exceeded forty degrees four hours ago,’ Imran replied. That turned his head toward the older woman. ‘These beetles nest in the wet silt crevices between the river foundation blocks. That underground channel began venting steam. Then, the heat traveled along the foundation joints like water down a copper gutter. The moisture in their nursery turned to scalding vapor.’
He set down his tweezers and rubbed his thumb across the back of his neck. He felt the persistent, dry draft coming from the cracked mortar. ‘This isn’t an attack, Pella. It’s a maternity ward fleeing a house fire.’
Pella looked down at the endless lines of black bodies crawling across the white meal. For two days, the entire Lower Ward had been in a state of growing panic. Street boys had thrown stones at the kitchen shutters, the town beadle had threatened to board up the doors. The flour merchants on the quay had refused to unload their carts for fear of the demon swarm.
‘If the market wardens saw this,’ Pella said. Her throat was tight with anger, ‘they’d still want to burn them. To the College, anything that comes out of the river that doesn’t have an official summoner’s seal is just vermin to be eradicated.’
‘That’s because summoners don’t study biology,’ Imran said with a flat, shrugging snort. ‘They study leverage. They think if something has six legs and moves without a leash, it’s a failure of civic discipline. But an insect doesn’t care about civic discipline. An insect cares about moisture, heat, and food, in that exact order.’
He reached into his pocket. Then he drew out a box of grease pencils, selecting a red one with a blunt tip. He leaned over the plank and marked a circle around a small group of beetles that had stalled in the center of the floor, their movements sluggish and disoriented.
‘Their core heat is climbing,’ Imran noted, touching the shell of one adult with the fine tip of his probe. ‘Thirty-two point four degrees. If their body heat hits thirty-six, the protein in the egg capsules will denature. The embryos will die inside the membrane, and the nurses will abandon them to rot.’
Sister Merrow frowned, stepping closer. The smell of boiled tea from her mug mingled with the chalky tang of the room. ‘If fifty thousand dead grubs rot in my cellar floor, the stink will shut this kitchen down faster than any college court guard.’
‘Exactly,’ Imran said. ‘And the backup fungus that feeds on decaying insect protein will release airborne spores that spoil every sack of flour within fifty yards. That’s how you get real civic plagues—not from the living bugs, but from the fools who poison them without cleaning up the mess.’
Across the alley, the wheels of a heavy cart wagon rattled over wet stonework. It splashed cold puddle water against the kitchen foundation. The damp river chill outside seemed fully detached from the stifling, baked air rising through the larder flat stone slabs.
Imran carefully noted the jaw load ratios in his margins. In his pest control practice across West Yorkshire, he had cataloged grain weevils in mill silos and wood-boring grubs in church rafters. But he had never witnessed an organized brood escape carried out with such sharp-angled care. Each adult kept a measured tiny spacing from its neighbor. That kept the delicate capsules from colliding.
Pella examined the semi-clear membranes through the backup lens. She watched the baby forms shift with faint, rhythmic contractions. ‘They move like river water in a tidal water gate,’ she whispered. ‘Even in their shells, they’re tuned to the flow.’
Sister Merrow rested her hand against the doorframe, watching the orderly black lines. ‘My grandmother used to say the river sent the lantern beetles into the cellars whenever the spring floods were about to crest. The old folk called them the little ditch-keepers. Now the summoners call them pests because they don’t bow to silver collars.’
‘Old wives’ tales are usually just sound living field notes wrapped in church language,’ Imran remarked. He tapped his pencil on the board. ‘The old folk survived. That was because they paid attention to what the animals were doing instead of reading edicts from the High Terrace.’
Pella picked up her ledger, watching the tiny, shimmering capsules catch the weak morning light. ‘We have to move them. But where? The whole street is forty degrees along the gutter lines.’
‘We don’t move them,’ Imran said. They sat back on his heels and wiped his hands on a clean cotton rag. ‘You can’t carry fifty thousand beetles by hand without crushing half the brood. We build them a nursery they want to go to, and we let them move themselves.’
He tapped his pencil against the edge of the board. ‘In nature, an insect follows two things when escaping heat: negative heat gradients and high moisture in the air. If we set up a cool, damp chamber in the lowest cellar vault, they’ll smell the moisture through the foundation cracks and route their entire column down the stairs within two hours.’
Eren Tal appeared in the doorway, his leather apron covered in oak shavings. He held a heavy wooden mallet and a bundle of dry lath. ‘Ada’s on the audio slot in the washroom, Pella. She says the backing-up pressure in the street drain just dropped two PSI. It means Sorell has diverted the steam pulse into the lower foundation water chute. It’s coming straight under this room.’
Sister Merrow set her wash basin on a side shelf. She wiped her soapy hands on her apron. ‘The steam water chute runs right beneath the larder threshold, Eren. If Sorell pushes another pulse through at noon, the heat will blister the wood.’
Eren nodded grimly, touching the iron strap on the door. ‘The strap is already warm. You can feel the metal humming like a struck bell.’
Imran stood up, his face hardening into skilled determination. ‘Then we have about ninety minutes before the floor becomes an oven. Eren, put down the mallet. Go find me every unglazed clay pot in Lowbank that hasn’t been cracked by frost.’
Eren blinked, looking from Imran to the floor. ‘Clay pots? Sister Merrow’s flowerpots?’
‘Unglazed clay pot,’ Imran insisted. ‘The older and dirtier, the better. And tell that street boy Tavi to get in here right now. If he’s going to work for this outfit, he’s going to learn how to handle an insect without turning it into grease.’