AI The last dog walker vanished behind a rise in Richmond Park, and the evening folded over the grass like a lid. Aurora stopped at the line of oaks and looked for whatever made this stretch of park different from the rest. At first she saw only trunks black with rain, fern heads uncurling in the undergrowth, a drift of mist caught low between the roots.
Then the mist shivered.
It did not move with the wind. It tightened, silver and thin, across a ring of ancient stones half-buried in moss. The air there bent like heat above tarmac, except the light around it ran cold.
Aurora touched the crescent scar on her left wrist with her thumb.
“So that’s it.”
Nyx stood a pace behind her in a narrow shape stolen from the evening, violet eyes hanging in the dark where a face ought to have been. The grass beneath them held shadow longer than the rest of the field. Their outline blurred at the edges, as if the grove had begun to pull at them before they crossed.
“The boundary watches back,” they murmured. Their voice slipped through the oak leaves and came out from the wrong direction.
Isolde waited inside the stone ring. Her silver hair spilled to her waist, bright even in the failing light. Wildflowers crowded round her bare feet, white and blue and a red so deep it looked wet. The earth under those feet lay untouched. No print. No bent blade. She might have been painted into the clearing.
“You came before the park forgot you,” she said.
Aurora took one more look over her shoulder. The path behind them still lay where it should, pale and ordinary, leading back to roads, buses, a city that argued with itself long after midnight. She pulled her jacket tighter and faced the stones.
“You could have met us nearer the gate.”
“You could have worn shoes fit for wonder.”
Aurora glanced at her scuffed boots.
“They’ve got me this far.”
Isolde’s mouth bent in something that nearly became a smile.
“Then let them carry you farther. Step through the old teeth. Speak no true name if the grove asks. Take nothing that bleeds light.”
Nyx tilted their head.
“It asks questions?”
“Only of those who answer.”
Aurora let out a short breath.
“Useful as ever.”
She stepped between the standing stones.
The park dropped away in one clean cut. The damp, metallic smell of London after rain vanished. Another scent rushed in: crushed mint, cold water, bark split under frost, and something sweet beneath it all, ripe and thick as overfilled fruit. The air touched her face with more weight than air should have carried. Her ears popped.
Behind her, Nyx crossed next. The shadows around their body stretched wide, then snapped back into shape. Isolde turned and moved deeper into the clearing, and still the grass did not bend under her.
Aurora looked back.
The stone ring remained behind them, but not the park. Beyond the gap stood a long corridor of trees she had not seen from outside, their trunks pale as old bone and so broad three people linking arms would not have circled one. Their branches rose and braided together high overhead, making a vaulted roof of leaves lit from beneath by a green-gold glow that had no clear source. Between the roots spread flowers in every season at once: bluebells, foxgloves, roses with petals dusted in silver, tiny star-shaped blooms opening from mats of snow. Warm air drifted through cold pockets. Somewhere water chimed.
Aurora slipped her phone from her pocket and checked the screen. No signal. The time flickered , blanked, returned an hour earlier, then later, then settled on a row of empty white bars.
“Brilliant.”
Nyx leaned close without sound. The temperature around them dipped.
“Your little rectangle has become polite. It refuses to count here.”
Ahead, Isolde raised one hand, and a path revealed itself between low thorn bushes hung with glass-clear berries. It had not been there a moment ago. Aurora could have sworn the bushes touched before the seer moved.
She followed.
The ground felt springy, like moss laid over old wood. Now and then a root pulsed beneath her sole, slow and steady, as if something large and sleeping breathed under the whole grove. Small lights drifted in the air at shoulder height. They looked like seeds until one brushed her sleeve and unfolded six gauze wings before settling on a fern. Moth. Dragonfly. Neither. Its body shone with a faint inner blue.
Nyx tracked it with those pale violet eyes.
“It has no shadow.”
Aurora stopped.
The creature lifted from the fern. On the underside of each wing sat a dark mark shaped like an eye. All six marks blinked shut at once. It darted away into the trees.
“Right,” Aurora muttered. “That’s worse.”
“Only if you insist on being looked at,” Isolde called from ahead.
The chiming water grew louder. They came upon a stream no wider than a kitchen table, clear enough to show each grain of white sand on the bottom. It ran uphill. Not quickly . Not with violence. It simply moved against the slope in a smooth, patient climb, carrying silver leaves towards a rise where no source waited.
Aurora crouched at the bank. Her reflection stared up from the water, but the face on the surface turned a beat too late. She held still. So did it. A strand of black hair slipped across her cheek. In the water the hair slid the wrong way.
She drew back at once.
“Please tell me that was normal.”
“Normal is a fence built by frightened men,” Isolde said.
“That’ll be a no, then.”
Nyx knelt beside the stream. Their hand, all dusk and smoke, dipped two fingers into the current. The water darkened around them and rang like a struck glass rim.
“It tastes of moonstone and iron.”
Aurora looked over.
“You drank it with your hand?”
“I do many things with my hands.”
She barked a laugh before she could stop herself. The sound bounced off the trees and came back threaded with another laugh, thinner, higher, not hers. It came from somewhere beyond the stream. Then it vanished.
The back of her neck tightened.
“Was that the grove?”
Isolde turned her face towards the sound, pale eyes fixed on nothing Aurora could see.
“Not everything old here sleeps.”
Aurora straightened.
“That answer did nothing for me.”
“Then it served its purpose.”
A narrow bridge arched over the stream, woven from living roots, white on the outside and gold in the cracks. Aurora stepped onto it and felt a faint tremor underfoot, not loose, not weak, more like muscle shifting. She crossed anyway. Halfway over she glanced down and saw shapes moving beneath the sand: fish made of light, long as forearms, gliding with slow bends of their bodies. One rolled to show a human eye, grey and unblinking.
She quickened her pace.
On the far bank the trees grew stranger. Their bark bore lines like script, not carved but grown into the wood . The branches held fruit in impossible combinations: pears skinned in velvet black, apples clear as blown sugar with seeds suspended at the centre, plums furred in silver. One split on its own as they passed and released a scent of burnt rosemary and summer rain. Aurora’s stomach clenched with sudden hunger so sharp it felt planted in her rather than natural.
Nyx caught her wrist before her hand reached for the branch.
“Don’t.”
She looked down. Her fingers had lifted without permission. The scar on her left wrist showed white against Nyx’s shadow-dark hand.
“I wasn’t—”
“You were.”
Isolde stopped beside a low tree whose leaves flashed from green to copper and back again whenever Aurora blinked.
“The grove feeds what enters it. Hunger first. Then grief. Then memory. If you eat, it keeps a place set for you.”
Aurora pulled her hand free and shoved both into her pockets.
“Fine. No fruit.”
“Also no bargains,” Isolde went on. “No dancing if music rises from the roots. No gifts from children with old faces.”
Aurora stared at her.
“How many rules did you plan to spring on us one at a time?”
“All the useful ones.”
They walked on. Sound shifted with each step. In one stretch the leaves hissed like distant rain though the canopy stood still. In another, the grove swallowed every noise except their breathing, and even that came back muffled, wrapped in wool. Once Aurora heard church bells. Once she heard cutlery laid out for dinner. Once her mother’s voice called her full name from somewhere between two trunks, patient and sharp in the way it had been when she came home late from school.
She stopped dead.
Nyx froze with her.
“That voice is not yours to follow.”
Aurora swallowed.
“I know.”
But her chest had tightened. The sound had arrived complete, carrying the tiny details memory always missed: the scrape of a chair across lino, the whistle of the old kettle, rain tapping the kitchen window in Cardiff. It took effort to move her boots again.
The path opened without warning into a wide hollow. Ancient roots rose from the earth in walls taller than houses, twisted together so tightly they formed arches and alcoves. Between them stood shards of pale stone, smooth and curved, half-swallowed by moss. Not ruined exactly. Grown over. Reclaimed. The place looked less built than persuaded into shape.
At the centre lay a pool black as polished obsidian.
No leaves floated on it. No ripple broke its skin. Above it hung dozens of thin lights, each one a droplet suspended in the air, glowing gold at the core and blue at the edges. They rose and fell in slow breaths.
Aurora turned in a slow circle.
“This is your grove?”
Isolde moved past her into the hollow. The hanging lights tilted towards the seer like flowers following sun.
“This is one room inside it.”
Nyx’s outline sharpened as they stared round the roots. For the first time since Aurora had known them, they looked almost startled.
“There are no shadows here.”
Aurora blinked. They were right. The lights cast brightness across bark, stone, water, her own hands, yet nothing fell behind anything else. Every object stood clean and fully visible from every side. Her stomach dipped.
“That’s wrong.”
“Wrong is another fence,” Isolde said, though more softly now. The strange levity had drained from her voice. “This place stood before the sun taught the world its habits.”
Near the pool, one of the pale stone shards showed deliberate shape: a low table or altar, its edges cut into curling patterns like vines and antlers tangled together. Something rested on the surface beneath a veil of roots as fine as wire.
Aurora stepped closer.
The roots twitched away from her warmth . Under them lay a blade the length of her forearm, slender and leaf-shaped, forged from moonsilver so cold the air above it trembled . Even in the green-gold light it held its own pallor, clean and sharp and faintly luminous.
She drew her own dagger from under her jacket in answer, the Fae-forged blade Isolde had given her. Its edge flashed. The one on the altar answered with a pulse of thin white light.
Nyx drifted to her shoulder.
“The steel knows its sibling.”
Aurora did not take her eyes off the altar.
“You keep more of these lying about?”
Isolde stood on the pool’s edge, silver hair hanging still in air that moved through the hollow.
“Not for long. The grove had not decided whether to show this room to you.”
Aurora glanced over.
“And now?”
The pool stirred for the first time. Its black surface loosened into concentric rings, silent, smooth. Beneath it, deep below the reflection of roots and lights, another sky turned. Not the evening above Richmond Park. This one ran with stars sharp as nails driven into blue-black glass. Something pale drifted under them, vast and distant, all towers and terraces curved like shells.
Aurora took one step forward without meaning to.
Nyx’s whisper roughened.
“Careful.”
She crouched at the edge instead, boots gripping the root-laced earth, and looked into the moving dark. The strange city under the water rolled past in silence while the gold-blue lights overhead dipped lower, gathering round the three of them until their glow touched her face and her knuckles and the cold silver of the blade in her hand.