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The Department of Mysteries was quieter than Hermione remembered.
Dust hung in the air like old magic, and every sound seemed to echo for longer than it should, as though time itself was reluctant to move on.
It had been years since the war ended, and although she had walked these corridors a hundred times since as Deputy Head of Magical Law Enforcement, something about this place still unsettled her. Too many locked doors that led to questions. Too many rooms that once held answers she hadn’t been ready to face.
Today she wasn’t here for policy or paperwork. The report that had landed on her desk that morning mentioned the recovery of a Time-Turner prototype from the ruins of a sealed Ministry storage vault—one that, by all rights, should have been disintegrated with the rest. Now, under the soft, uneven light of enchanted lamps, she saw it: delicate, golden, and finer than any she’d ever handled. Its hourglass shimmered faintly, filled not with sand, but with something more like liquid light—shifting and alive, as if it contained time in its truest form.
Hermione reached out, brushing a thumb along the edge. “What are you, then?” she murmured.
The air around her seemed to shiver in response.
Before she could step back, the world tilted—colours smearing, sound folding inward—and then steadied again. She gasped, hand clutching the edge of the table.
The Department wasn’t empty anymore.
Figures flickered faintly through the air, ghostlike and translucent, but present. Unspeakables moved between the rows of desks, speaking to one another in voices she couldn’t quite hear. Someone passed her carrying a stack of scrolls; another hunched over an orb that pulsed with dim blue light. They glowed silver at the edges, like memories not quite anchored in the present.
Then, as quickly as they’d appeared, they dissolved into specks of dust and light.
Hermione’s hand tightened around the Time-Turner. It hadn’t sent her back. It had shown her what had been.
Weeks later, the device was still on her mind.
She told herself she was studying it for the Department. For research, for safety protocols, and for the sake of understanding. But she knew better. It wasn’t academic curiosity driving her.
It was the ache of wanting to see.
So, one quiet Saturday, she took it somewhere that had always been tethered to time—to memory, to life, to her.
Hogwarts.
The gargoyle by the bottom of the Headmistress’ office turned, and Hermione smiled faintly as she climbed the familiar staircase to the circular office.
The portraits looked down at her as she entered—Dumbledore’s soft smile, Phineas Nigellus’s exaggerated sigh, a few of the older additions pretending not to eavesdrop. Behind the great desk sat Minerva McGonagall, still as sharp as ever, her hair streaked with silver but her eyes bright as glass.
“I take it this isn’t a social visit,” McGonagall said, standing to greet her.
Hermione chuckled. “When have I ever managed one of those?”
“Rarely,” McGonagall said dryly, though there was fondness in her voice. “Now, what mysterious artefact have you brought me this time?”
Hermione placed the Time-Turner on the desk. It gleamed softly in the light from the window.
“I think it wants to show me something,” she said quietly.
McGonagall peered at it for a long moment. “You always did have a talent for attracting artefacts that prefer not to be understood.”
“Occupational hazard,” Hermione replied.
The older witch’s mouth twitched. “Just remember, Mrs Granger, Hogwarts has a way of showing people what they need, not always what they want.”
Hermione smiled. “I’ll keep that in mind.”
The castle greeted her like an old friend.
The portraits whispered as she passed. The suits of armour straightened, their joints creaking in recognition. The smell of stone and candle wax filled the corridors like it always did.
It felt strange to walk these halls without purpose. Not as a student racing to class, not as a fighter running for her life. Just… Hermione, visiting home.
She paused near the library entrance, the Time-Turner gleaming in her palm. With a breath, she turned the hourglass once.
The air rippled.
At first, nothing. Then faint laughter carried down the hall—light, youthful, unburdened laughter. Hermione followed the sound until the walls of the castle disappeared, replaced by the soft gold of sunlight and the scent of grass.
Four boys were sprawled near the Whomping Willow, robes discarded, hair wind-tossed, faces unlined by worry. One tossed golden Snitches into the air. Another laughed so hard he fell back into the grass. The fair-haired one napped with a book over his face, and the last—quieter, thoughtful—read aloud from a parchment, failing miserably to sound serious.
The Marauders.
Hermione felt her breath catch. They were only echoes—folds in time stitched into the castle’s memory—but they felt alive. The sunlight gleamed on James’s glasses, caught in Sirius’s grin, and bathed them all in a golden glow.
She watched as James conjured a small galaxy of glowing sparks above them, the light dancing like stars. Sirius whooped. Remus smiled. Peter applauded like a child at Christmas.
And then they dissolved, laughter fading into the sound of the real wind through the leaves.
Hermione stood for a long moment, heart aching and full at once.
Not quite sad. Just moved.
Over the next few weeks, she visited again and again.
In the courtyard, she saw her younger self—all bushy-haired and wild-eyed—dragging Harry and Ron toward the library.
By the corridor outside the kitchens, Fred and George raced Peeves on stolen brooms, shrieking with laughter.
Near the Astronomy Tower, Luna sat cross-legged beneath the stars, humming to herself as if they were listening.
Sometimes, the echoes overlapped, generations brushing past one another, none aware of the others’ presence.
Hogwarts, Hermione realised, remembered everything.
It was on one such visit that she found herself joined by company.
“Thought we’d find you here,” came a voice behind her.
Hermione turned, smiling as Harry and Ron approached across the lawn. Harry’s hair was wind-tossed as ever, his Auror’s coat slung over one arm; Ron had a paper bag of Honeydukes sweets half-empty in his hand.
“Did McGonagall send you?” she asked.
“Maybe,” Harry said. “She said something about you playing with time again.”
Ron grinned. “Said it in that tone, too. You know, the ‘Hermione Granger, why must you constantly invite catastrophe’ tone.”
Hermione rolled her eyes affectionately. “It’s not dangerous. Not really.”
Ron peered at the Time-Turner in her hand. “That the same thing you said in third year when you and Harry almost changed the course of time?”
Harry chuckled. “To be fair, that worked out all right.”
Hermione laughed softly. “It’s different. This one doesn’t send you back—it lets you see back. Glimpses, echoes of what was once here.”
Harry’s gaze drifted toward the lake. “Have you seen anyone?”
She hesitated. “The Marauders. They were here—laughing, carefree. Before… everything.”
Harry’s face softened. He turned to look at Hermione, and then looked out across the fields for a long moment. “I like that,” he said quietly. “Them still being here somehow. Feels right.”
Ron nudged him gently. “Bet Sirius would love knowing people are still gossiping about him by the Whomping Willow.”
Hermione smiled. “I think they’d all love that.”
For a while, the three of them just stood there, the wind tugging at their coats, the lake glimmering gold in the afternoon light.
Ron finally said, “D’you think Hogwarts really remembers? Like… feels it?”
Hermione looked at the castle. “Yes. I think it does. Every laugh, every spell, every promise—it’s all still here. It’s what keeps the magic alive.”
“Guess that means we’re part of it too, then.”
“Always were,” Hermione said softly.
They walked back together as the sky deepened into violet. Students spilled from the Great Hall, their chatter bright and easy. A group of first-years ran past, giggling, one of them clutching a smuggled Chocolate Frog like treasure.
At the steps to the Entrance Hall, McGonagall was waiting, her tartan shawl fluttering in the breeze.
“I see you survived your temporal tinkering,” she said, lips twitching.
“Barely,” Ron muttered.
Hermione pressed the Time-Turner into the Headmistress’s palm. “It’s safe now. I think it’s… done.”
McGonagall studied it for a moment, the faint light glimmering off her spectacles. “Perhaps it’s not broken at all,” she said softly. “Perhaps it simply remembers what it was made to guard.”
Hermione smiled. “Time itself.”
“Or people,” McGonagall said. “It’s hard to tell the difference, some days.”
That evening, as Hermione stood once more by the Whomping Willow, she turned the device one final time.
Nothing happened. No flicker of ghosts, no shimmer of the past. Only the gentle sound of branches waving gently and the voices of students laughing somewhere nearby.
She smiled. “Maybe you’ve shown me enough.”
In the distance, Ron called her name. Harry was at his side, waving her over. The sunlight caught in their faces, older but still familiar, still hers.
Hermione slipped the Time-Turner into her pocket and turned toward them.
Time, she thought, didn’t really move in straight lines. It circled, wove, folded, a tapestry of moments endlessly overlapping. And Hogwarts, patient and eternal, held them all.
As she walked back toward her friends, the wind off the lake stirred the grass, carrying the faintest echo of laughter—the kind that had once belonged to another set of friends, another time.
Hermione smiled. “All the time in the world.”
And somewhere, perhaps just beyond the veil of memory, the castle seemed to hum in quiet agreement.