AI The standing stones didn't look like much until Rory tried to step between them.
From the path in Richmond Park they had been easy to miss, three oaks grown so close their trunks had fused into an arch, bark silvered with lichen and roots buckling the frozen earth. Isolde had stopped just before them and waited, her silver hair unmoved by the wind that was cutting through Rory's jacket. The air on Rory's side of the arch smelled like December in London, wet leaves and distant traffic. The air on the other side smelled like nothing Rory had a name for .
"You are hesitating at the threshold that is not a threshold," Isolde said, and her pale lavender eyes caught the low light. "To enter, you must agree to be entered. Will you be borrowed, little bright-eyed one?"
Rory's fingers went automatically to the pendant at her throat. The Heartstone was the size of her thumbnail on its silver chain, deep crimson and usually just warm from her skin, but now it pulsed against her collarbone with a slow, distinct heat, like a second heartbeat. She tucked her straight black hair behind her ear with her other hand and felt the cuff of her sleeve pull up, exposing the small crescent-shaped scar on her left wrist.
"It's a yes or no question, Rory," came a whisper at her shoulder that wasn't quite a voice . Nyx stood where the shadow of the oaks fell longest, and for a moment they were just a shape cut out of the afternoon, a humanoid silhouette nearly six inches taller than her with two faint violet points where eyes should be. When they solidified the cold deepened around them. "She cannot lie, but she loves to make you answer your own riddle."
Isolde smiled, ethereal and ageless in a way that made it impossible to guess three hundred years on her face. "Time is a river here, and also a lake. Step carefully ."
Rory blew out a breath she could see and stepped through.
It was like walking through a soap film. Something shivered around her, a faint distortion in the air that caught the light and threw it back wrong. For a half second the world doubled and she saw both the park and something else overlaid, a shimmer that only someone who wasn't quite entirely normal would see . Then resistance gave with a soft pop she felt in her teeth and her boots hit moss.
She stumbled. The moss was impossibly soft and thick, a carpet of deep green that swallowed sound. It was studded with wildflowers, open blooms in white and impossible blue, in December. The cold was gone . The air here was warm and still and smelled of crushed petals and green sap.
Behind her, Nyx slipped through the arch without disturbing the shimmer at all. One moment they were shadow on bark, the next they were standing solid beside her, and then thin again, their edges bleeding into the dappled light as if testing whether this place would let them hold a shape . Isolde was already several paces ahead, though Rory hadn't seen her move. The moss showed two shallow dents where Rory's boots had landed, a trailing smear where Nyx's form had coalesced, and nothing at all beneath Isolde's bare feet.
"Okay," Rory said quietly, because cool-headed had always been what people called her and she needed to hear her own voice to believe it. "Okay. We're through."
The Grove was larger inside than the arch should have allowed. The oaks that had formed the gate were now just two among many, ancient trunks wide enough that two people couldn't link arms around them, their canopies knitting together high overhead to filter light that didn't seem to come from any sun Rory could find. Between them the clearing opened, not a clearing at all but a pocket, a hidden fold where the Veil had worn thin and tucked a piece of somewhere else against the earth. Somewhere beyond the trees she could hear water trickling, and somewhere closer she could hear something like a slow inhalation, as if the place itself were breathing .
"You feel it, don't you," Isolde said without turning. Her voice carried perfectly even though she was further away than she should be. "The world holding its breath."
Rory followed, one hand still on the Heartstone. The pendant's pulse had steadied but not faded, a low warmth that said a door was near, though Isolde had told her there was no Hel portal here, only the seam between Earth and the Fae. The other hand rested on the dagger at her belt. Isolde's gift sat cold even through the sheath, moonsilver that never took heat from her body, and as they moved deeper the slender leaf-shaped blade gave off the faintest luminescence, catching on nothing and lighting nothing.
Nyx drifted beside her, and their whisper came low. "It remembers being before."
"What does?"
"Everything," they said, and their violet eyes brightened a fraction. "This grove was old when Aldric was still flesh trying to name things in 1643."
The trees pressed closer. Bark here had patterns in it like eyes half-closed. Vines as thick as her wrist hung down and twitched away from her shoulder when she brushed them, not like plants but like something shy . The wildflowers turned their faces as she passed, not toward light but toward her , and Rory felt a sudden, irrational unease prickle up the back of her neck, the quick out-of-the-box part of her brain that had gotten her out of Cardiff and away from Evan and into a flat above Silas' bar supplying the thought before the rest of her could dress it up: we're being looked at from underneath.
She stopped.
Isolde stopped too, head cocked. "You hear the question the Grove asks?"
"I hear something listening," Rory said.
Isolde's smile was kind and unhelpful. "The listened-for thing is often the listening thing. What did you bring to trade for wonder?"
Nyx made a sound that might have been a laugh if wind could laugh. They crouched, or folded, their shadow-form pooling down until the violet points of their eyes were level with the flowers. Where they passed incorporeal, the blossoms didn't bend. Where they tried to be solid, the petals shivered and curled. "It doesn't like me," they whispered. "Too much between here and there. I am a smudge on its lens."
"It's not that it doesn't like you," Isolde said. "It doesn't know where to put you."
Rory knelt to steady herself and pressed her palm flat to the moss. It was warm. The luminescence of her dagger brightened a touch, and the moss under her hand responded, a faint tracery of light spreading out from her fingers like veins, like roots made briefly visible. She snatched her hand back. The light faded slowly , reluctantly .
"Did you see that?" she said.
"I saw the Grove see you," Isolde said.
Further in, the trees opened onto what Rory had first taken for a pond and then realized was a perfect circle of still water set into the earth with no bank, no mud, just moss to water to reflection without interruption. It reflected not the canopy but a sky Rory didn't recognize, a deep indigo crowded with stars even though it was still afternoon, and in the center of it a single standing stone rose from the water, its surface covered in carvings that shifted when she wasn't looking directly at them.
The Heartstone gave a harder pulse , hot now.
"That's new," Rory said, and pulled the dagger half free without thinking. The moonsilver was cold enough to sting her fingers even through the wrap, and in the strange starlight it shone clear, edges keen enough to cut through wards and glamour and, Isolde had told her, demon flesh more cleanly than any steel. The light of it fell on the water and the water didn't reflect it.
Isolde stood at the water's edge, leaving no footprints, no ripple. "A memory of a door. The Veil is thin enough here to show you what it keeps out. You wanted to know what you were given that for."
Rory understood then that the pendant wasn't just reacting to Hel. It was reacting to any place where the Barrier frayed, any rift point the Wardens were supposed to monitor. This was one, a natural one, watched not by wardens but by a half-Fae woman who had been exiled for telling mortals what she saw.
Nyx had gone very still. Their form had thinned until they were almost not there, a stain of shade at Rory's periphery. "Rory," they whispered, and the whisper had an edge. "We have been here longer than we should have."
Rory frowned and pulled her phone from her pocket. No signal, as expected, but the clock read 15:42. It had read 15:42 when she stepped through. She stared at it, tapped the screen. The numbers didn't change. Above, the false starlight seemed to have wheeled a fraction.
"Isolde, how long have we been inside?" she asked, and kept her voice even with effort.
Isolde tilted her head, silver hair sliding over her shoulder like water. "Long enough for the outside to have missed you for a minute. Or a day. The Grove keeps time like it keeps guests, jealously and badly. You came to see, so see."
The unease spiked, then transmuted. Wonder crowded in behind it, insistent and bright. The carvings on the stone in the pool were resolving now, not shifting but settling under the dagger's cold light , and Rory could make out figures: a woman with black hair cut straight at the shoulder, a shadow with violet eyes, a silver-haired seer, all standing at an arch of oaks. It was them. Or it would be.
"Oh," she breathed. Bright blue eyes wide. "It's not showing what was."
"No," Isolde agreed, pleased . "The future is a rude guest. It arrives before it is invited. You asked what the pendant is for. You ask what the knife is for. The Grove answers both at once if you let it."
The water rippled for the first time, though nothing had touched it. A single wildflower, one of the white ones, detached itself from the moss near Rory's boot and drifted onto the surface. It floated toward the stone and as it went its petals opened impossibly wide, and inside each petal was another tiny star.
Nyx's hand, suddenly solid and cold, closed around Rory's forearm, not pulling, just anchoring. "We should step back," they whispered. "Wonder is a mouth."
Rory didn't step back. Not yet. Her mind was moving fast, cool and quick the way it did when Eva used to call her at two am with a problem and no solution, the way it had when she needed to think around a corner with Evan. The Grove was a pocket, a place where time and the Veil did not behave. The pendant heated near thresholds. The blade cut thresholds. Isolde could not lie, only mislead, and she had said to be borrowed.
She looked down at Isolde's bare feet, unmarked moss, at her own boot prints, at Nyx's half-prints, and she understood the trade being asked .
"If we go forward we leave a mark," Rory said slowly . "If we don't, we don't get to know."
Isolde's pale lavender eyes crinkled. "Clever girl. So, little bright-eyed one, will you?"
Rory slid the moonsilver dagger back into its sheath. The cold bit one last time and then settled. The Heartstone's pulse slowed to match her own. She took one deliberate step toward the water's edge, feeling the moss give and spring back, feeling the alien air fill her lungs, hearing Nyx's whisper thin with apprehension and Isolde's soft, approving hum.
The pool reflected her face now, and behind it the amber sky of somewhere else entirely, warm and vast and hungry, flickering at the very edge of the Grove's indigo like a feast seen through a keyhole.