Sophronia Inkwood arrived at ten minutes to ten with her photographer already scouting angles from the square.

  She stood outside the window studying the shopfront for a full minute before she knocked, which was a different woman from the one who had walked into Hecat's classroom on his schedule a year ago. This time she was on the hunt, and she wanted to see the territory before the subject had time to arrange it.

  She looked much the same, with wire-rimmed glasses, dark blue robes, and her hair pinned back in a tight twist. The Quick-Quotes Quill was absent again, replaced by an ordinary quill and a leather notebook that she held like weapons. The photographer was a thin young wizard lugging a box camera on a wooden tripod, the kind with a black cloth hood and glass plate negatives. He was already setting up near the display cases before Inkwood finished shaking Rowan's hand.

  "Mr. Ashcroft," she said, with the same firm grip he remembered. "You've come up in the world since we last spoke."

  She was already looking past him at the luminaires. The row of nine silver disks in their glass housings, glowing with that clean white light that looked nothing like anything else in the room. Candles on the mantelpiece, daylight through the window, and then this row of steady white points that didn't flicker or waver.

  "May I?" She didn't wait for an answer, already moving toward the nearest display case. She studied it for a long moment, then leaned closer and examined the runic inscription through the glass housing. "Who did the metalwork? This is finer than anything I've seen outside of Gringotts."

  "My partner, Lawrence Goode. He's an artificer."

  "Another twelve-year-old?"

  "Thirteen now, and better at fine inscription work than most adults twice his age. He designed the method that produces these as well."

  She wrote something in her notebook, then turned and looked at the shop as a whole, taking in Clara's display cards, the copper prototypes on the demonstration shelf, the contrast between them and the silver units. Her eyes missed nothing. Rowan could see her composing the article already, choosing which details to include.

  "Walk me through it," she said. "I want to understand what this is and why it works."

  So Rowan told her. He explained the five-rune array with Kenaz at the core for controlled energy release and Jera cycling to draw from ambient magical energy so the luminaire never needed recharging or recasting. He explained why silver mattered as a substrate, how its natural conductivity amplified the array's output to produce light that matched daylight rather than the amber warmth of the copper prototypes. He showed her one of the silver disks up close, pointing out the rune positions and the connecting channels.

  Inkwood listened with her quill moving steadily, and when he finished she tapped it against the notebook. "You're remarkably open about the technical details. Most inventors I've interviewed would sooner hex me than explain how their product works."

  "The runic architecture is inscribed on the surface for anyone to study. A competent artificer could work out the array given enough time. I'd rather explain it well than have someone describe it badly."

  "And you're not worried about competitors?"

  "If other artificers start making luminaires, or improving on the design, then the wizarding world benefits. I'm not trying to hold a monopoly on light."

  She raised an eyebrow at that but didn't challenge it. "You said the runes draw from ambient magical energy. What happens if someone takes one of these into a Muggle home?"

  It was a sharper question than he'd expected. "It wouldn't activate. The luminaire needs to be in a space where magic exists in the environment, which means any wizarding home or business, Hogwarts, Diagon Alley. Anywhere a witch or wizard lives and works, the ambient field is strong enough to sustain it indefinitely."

  "So it's useless to Muggles."

  "Muggles have gas lamps and arc lights. They don't need this. Wizarding homes are the ones still lit by candles and torches, and they don't have to be."

  She wrote quickly. "And the price?"

  "Three Galleons."

  Inkwood's quill stopped. She looked at him over her glasses. “That little? For permanent lighting?"

  "The whole point was to make it affordable. Silver costs eleven Sickles an ounce on the open market, with each disk needing four ounces. Add everything else and the luminaire would cost more than most families could justify. The production process I've developed brings the cost down to a fraction of that, and I've set the price to reflect it. Three Galleons is less than an average wizarding household spends on candles in a year."

  Inkwood underlined something in her notebook twice. "Less than candles. That's the line you should lead with, Mr. Ashcroft. The lighting is impressive, yes, but the price is what will get people through the door."

  She asked about his knowledge next, and he credited private tutors who valued their anonymity. She asked about future plans and he said the luminaire was the first product but not the last, without elaborating. She asked about the challenges of being Muggleborn in Diagon Alley and he gave her a version of what he'd said in their first interview, that he'd rather be judged by the product than by who made it.

  Then she closed her notebook with a snap and looked at him directly. "I'll be honest with you because you were honest with me last year and I think you've earned it. This is a strong story. My editor will want it prominently placed."

  Rowan thought about that. The last time Barnabas Flint had placed a story about him prominently, it had been designed to do as much damage as possible. "Your editor wasn't particularly generous the last time he ran a piece about me."

  "No," Inkwood said, and something shifted behind her professional composure. "He wasn't. But I've learned over six years at the Prophet that the placement and the headline are my editor's domain, and the words beneath them are mine. I write what I see, Mr. Ashcroft. What gets built around it is beyond my control." She paused. "The article runs in tomorrow's morning edition. I'd brace myself if I were you."

  The photographer finished his exposures, packed the glass plates into a padded case, and followed Inkwood out into the square.

  Clara emerged from the back room. "She's sharper than she lets on."

  "She's the best journalist they have. Which is why I offered her the exclusive."

  The article arrived with the morning post. Clara had the Prophet spread on the counter before Rowan came downstairs, and Lawrence was reading over her shoulder with his breakfast toast forgotten in one hand.

  The headline ran across the top of page five:

  CHEAPER THAN CANDLES: MUGGLE-BORN INVENTOR PROMISES TO LIGHT THE WIZARDING WORLD

  Below it, the photograph showed the shop's interior, the luminaires glowing in their display cases with Rowan standing behind the counter. The long exposure had captured the light beautifully, bright halos against the dimmer background, and the image made the contrast look almost theatrical.

  By Sophronia Inkwood, Senior Correspondent

  On a quiet side street off Diagon Alley, in a shop barely large enough to hold a dozen customers, a twelve-year-old Muggle-born wizard is selling something the wizarding world has never seen.

  Rowan Ashcroft, whom readers may remember as the youngest finalist in the history of the International Youth Duelling Championship, has spent his summer establishing a shop called the Crucible at Number Four, Carkitt Market. It sells a single product: a device he calls a luminaire, which produces permanent magical light from a palm-sized silver disk inscribed with a runic array of his own design.

  The claim sounds extraordinary, but this reporter has seen it working. Several units were in operation during my visit, and the light they produce is steady, bright, and comparable in quality to natural daylight. Mr. Ashcroft states that a luminaire, once activated, will run indefinitely by drawing on the ambient magical energy present in any wizarding space. No wand is required to operate it. No maintenance is needed.

  This tale has been pilfered from Royal Road. If found on Amazon, kindly file a report.

  Perhaps most striking is the price. At three Galleons per unit, Mr. Ashcroft says the luminaire costs less than the average wizarding household spends on candles in a single year. He attributes this to a proprietary production method that reduces the cost of the product.

  The craftsmanship is notable. The inscriptions, produced by Mr. Ashcroft's partner Lawrence Goode, are finer than any this reporter has observed outside of goblin-made artefacts. Mr. Ashcroft was unusually forthcoming about the technical principles behind his product, explaining the runic architecture and the role of each rune in the array with the confidence of someone who is not afraid of imitators.

  "If other artificers start making luminaires, or improving on the design, then the wizarding world benefits," he told me. "I'm not trying to hold a monopoly on light."

  Mr. Ashcroft makes no secret of his inspiration. The luminaire, he says, was conceived after observing the electric arc lamps that Muggle authorities have recently installed along the Victoria Embankment in London. These Muggle devices also produce a bright, steady light that illuminates entire streets after dark. Mr. Ashcroft's achievement, if his claims hold, has been to accomplish something similar through purely magical means.

  It would not be the first time a Muggle innovation has found a home in wizarding society, despite initial resistance. Readers may recall the controversy that surrounded the Knight Bus when Minister McPhail commissioned it a decade ago, adapting a Muggle conveyance for wizarding use. Some prominent members of our society denounced it as a "Muggle-esque outrage" in these very pages. Today the Knight Bus is one of the most popular services the Ministry provides. Whether Mr. Ashcroft's luminaire will follow a similar trajectory remains to be seen, but the parallel is worth noting: a practical idea, inspired by the Muggle world, offered at a price that ordinary witches and wizards can afford.

  When asked about his educational background, Mr. Ashcroft credited private tutors who prefer to remain anonymous, as well as two years of self-directed study at Hogwarts. He declined to discuss future plans in detail, though he confirmed that the luminaire is the first of several products he intends to develop.

  Rowan set the paper down and read the headline again. Cheaper than Candles. It was practically an advertisement.

  The last time Barnabas Flint had written a headline about him, it had read Mudblood Finalist Speaks, and the framing had been designed to undermine every word Inkwood wrote beneath it. This was the opposite. A headline that made the product sound irresistible and the inventor sound like an underdog worth rooting for.

  Flint couldn’t have suddenly developed a conscience. Editors like him don’t change. What had changed was something else, something Rowan couldn't quite see yet. He filed the question away and turned to the window. Opening day was in an hour.

  They opened at nine o'clock on a Tuesday morning in the second week of August, and the first customer walked through the door before Clara had finished straightening the display cards.

  She was a stout witch in a patched travelling cloak who said she'd seen the Prophet at breakfast and come straight from Feldcroft by Floo. She picked up one of the copper prototypes, turned it over, tapped it off with her wand and then on again, and asked how much.

  Clara held a silver luminaire beside the copper to show the difference, then told her the price. The woman bought two without hesitating. One for the kitchen and one for her daughter's bedroom, because the girl had been reading by candlelight and she was worried about the curtains.

  That set the tone. Customers arrived in ones and twos throughout the morning, drawn by the Prophet article or the foot traffic through the square or the light in the window that they couldn't identify. Clara ran the shopfront with the quiet competence that came from two years behind a counter in Diagon Alley, letting the product demonstrate itself and knowing when to stop talking. By noon they'd sold three units.

  Rowan retreated to the workshop after the third sale. His job now was production, and the logistics of it were unforgiving. Each silver disk took four days through the transmutation process, and if they sold through their stock before the next batch was ready, they'd have to turn customers away. He advanced the current batch through its dissolution stage and prepared the next load of lead while Lawrence ran the press.

  They sold five luminaires on the first day. Fifteen Galleons in the strongbox. After deducting roughly six Galleons in production costs, they'd cleared nine Galleons of profit.

  The pace held through the week, limited less by demand than by supply. Word travelled through the Alley the way it always did, by conversation over shop counters and pub tables. Someone had read the article. Someone else had walked past the window. A third person had heard from their neighbour about a boy on Carkitt Market selling something strange.

  That evening, after the ledger was closed and Lawrence and Clara had gone upstairs, Rowan sat at the worktable and wrote a letter he'd been putting off.

  Dear Nicholas and Perenelle,

  The shop is open and the luminaires are selling. I owe you both more than I can express in a letter, but I'll try properly when there's time.

  I'm writing because I need your advice on something outside my knowledge. I've placed runic protection arrays on the doors and windows of the building, Thurisaz barriers with Isa regulation and Eihwaz binding, but they're stopgaps. They'll absorb a few hexes and buy time to react, and that's all.

  What I need are proper wards. I've searched Flourish and Blotts and found almost nothing on the subject. Everything I've read suggests ward magic is passed down privately within families and never put into print. I know a Fidelius protects your home, but is there anything else you know about wards?

  Rowan

  The reply came three days later, carried by the Flamels' eagle owl. Nicholas's handwriting, with a postscript in Perenelle's.

  Rowan,

  Your protections sound sensible for what they are. You're right that they won't hold against anything determined, but having them is better than not, and the fact that you thought to build them tells me Perenelle and I haven't been wasting our time with you.

  You are also right that the Fidelius is no help here. It is old magic, common among ancient families who have passed it down for generations alongside other protective charms you will not find in any shop. It serves us well because no one needs to find our house. Your problem is the opposite.

  Beyond the Fidelius, our knowledge of protective magic is limited to what any competent witch or wizard could manage, and I suspect you've already exceeded that with your runic arrays. The real discipline of ward-crafting belongs to the goblins. The wards around Gringotts are goblin-made, forged into the structure of the building itself rather than cast as spells layered over it. The wards that protect Hogwarts were built the same way, taught to the Founders by goblin craftsmen in an arrangement that the goblins have apparently regretted ever since, as it is one of the very few times in recorded history that they have shared the craft with wizardkind.

  I have written to Vorzak, whose crucibles you are currently putting to excellent use, to ask whether it might be possible to commission goblin wards for the Crucible. I should tell you that I am not hopeful. The goblins have always guarded their ward-crafting more zealously than their gold, and I am not aware of any case in which they have agreed to ward a wizard's property since the Founders' time.

  Under ordinary circumstances, Vorzak would at least hear me out. He is as reasonable as goblins get, which is to say he will listen before he says no. But circumstances are not ordinary. Perenelle and I have read what the Prophet has reported about Gringotts dismissing its wizard staff, and what we are hearing privately from old contacts is worse. Relations between wizardkind and the goblin nation have not been this strained since the rebellions of the last century. Asking a goblin to share his people's most closely guarded craft with a wizard is a difficult request in the best of times. Asking it now may be impossible.

  I will let you know what he says. In the meantime, keep your barriers active and your wand close.

  Nicholas

  P.S. He has been fretting about this since your letter arrived and refuses to admit he's worried. You should know that the only other time I've seen him this agitated about a student's safety was in 1406, and that situation involved a basilisk. Please do be careful. — P.

  Nicholas's letter confirmed what Rowan had already suspected. Proper wards were beyond his reach for now, and might be for a long time. Which brought him back to what he had.

  The barriers would fail against a serious attack. He'd known that when he built them. But failure didn't have to mean useless. If someone forced an array past its breaking point, the stored energy in the Thurisaz cores had to go somewhere. Normally it would dissipate, wasted.

  Unless he gave it somewhere to go.

  He spent an evening reworking the front door array, layering more power into the Thurisaz cores than the barrier strictly needed. The excess sat like a drawn bow, held in check as long as the array held. If someone broke through, all of it would follow the only path the Thurisaz geometry allowed. Outward. Into whoever was standing on the other side.

  It was a one-use trap disguised as a defensive measure. Once it fired, the doorway would be completely unprotected. But anyone close enough to break the barrier would be close enough to regret it.

  He did the same to every window array on the ground floor. It took three more evenings and left him exhausted, but when he finished, the building's defences had a second purpose that no one looking at the rune work from outside would suspect.

  By the end of the first full week, they'd sold all nine of their opening stock plus the first three from the new cycle that came off the press during the week. Twelve luminaires. Thirty-six Galleons in revenue, roughly fourteen in materials, and after Clara's salary and operating costs the ledger showed a clear profit of fifteen Galleons.

  More importantly, they had a waiting list. Clara kept it in a separate notebook, names and addresses of customers who'd come in to find the display cases empty and left deposits for the next available unit. There were eight names on it by Saturday, and Rowan calculated that at his current production rate he could fill those orders in about twelve days if nothing went wrong with the transmutation batches.

  On the morning of the fifteenth of August, Rowan woke to the smell of bacon and something sugary and warm that had no business being in a workshop kitchen at seven in the morning.

  He dressed and came downstairs to find the shop floor rearranged. Clara had pushed the display counter against the wall and laid a cloth over the worktable, set with four places and a small cake with a single candle. Lawrence sat on a stool looking enormously pleased with himself.

  And standing by the window, practically vibrating with the effort of staying quiet until Rowan reached the bottom of the stairs, was Iris.