The Flamels' reply arrived Thursday at breakfast, carried by Rowan's owl who dropped it on his plate and immediately flew to the Owlery to sleep. The letter was in Perenelle's hand, dense with her small precise script, and ran to three pages.
Perenelle recognised four of the symbols from Iris's sketches. They were druidic. Pre-wand, pre-Futhark, older than any magical system still in active use. She'd matched two to a Norwegian compendium and two more to a manuscript fragment in the French Ministry's archives. The druids had carved symbols like these into stone across Britain and the Continent for millennia before the Ollivander family made their first wand. The standing circles were the most visible remnants. The symbols themselves described states of magic rather than effects, Perenelle wrote, and the closest analogy she could offer was the difference between a recipe and a description of hunger.
The mountain structure fit the same lost tradition. The Flamels had no name for the practice of embedding magic directly into stone without inscription. It predated goblin ward-crafting and had been lost entirely when druidic magic gave way to wands. The goblins had arrived at something similar through metalwork centuries later, independently.
Nicholas had added a note at the bottom of the third page:
These sites predate Hogwarts. The Founders built on land already saturated with old magic and they knew it. There are references in the older Continental literature to druidic sites in Britain that functioned as sealed repositories or trials, places where knowledge or power was locked behind challenges meant to test whoever came looking for it. Most scholars treat these as folklore. The few who took them seriously believed the sites were concentrated in Scotland, particularly in areas of high ambient magic. I have no way of knowing whether what you found is connected, but the description you sent is closer to those accounts than anything else I have encountered in six centuries of reading.
If your diagnostic charms return complete opacity, leave it alone until we can look at it together this summer. And be careful. The accounts that mention these sites also mention that they were guarded.
Rowan folded the letter and put it in his pocket. Iris was watching him from across the table.
"You've gone somewhere," she said.
"Give me an hour."
"That bad?"
"That interesting. I'll show you the letter after Runes."
She went back to her eggs. In Charms on Tuesday, Ronen had them practicing colour-changing charms. Iris's first attempt was so precise that Ronen stopped the class to use it as an example. She'd looked at her own wand as if it had done something unexpected.
"That was different," she said to Rowan afterward, walking to Runes. "The spell just went exactly where I wanted it. Like there was nothing between the intention and the result."
Rowan nodded. He remembered the feeling from his own expansion.
"It's like someone cleaned a window I didn't know was dirty." She was quiet for a few steps. "Lawrence has noticed it too. His inscriptions in Runes yesterday were the cleanest I've ever seen from him and he looked almost confused about it."
They didn't discuss it further. Five people in the castle knew what had happened on the seventh floor, and the effects were subtle enough that nobody else would make the connection.
After Runes, Rowan handed Iris the Flamels' letter in the corridor. She leaned against the wall and read it standing up, turning the pages slowly. Her expression shifted as she moved through Perenelle's analysis of the druidic symbols, sharpening with the focus she brought to anything that required her to reorganise what she already knew.
She reached Nicholas's note at the bottom of the third page and read it twice. When she looked up she was watching Rowan's face rather than discussing the content.
"You already knew some of this," she said. "Before the letter."
Rowan said nothing. The Fidelius sat in his throat and he let it.
Iris handed the letter back. She was quiet for a moment, her eyes moving the way they did when she was fitting pieces together. "Every time you try to tell me something about whatever this is, it's not that you stop yourself. Something stops you." The analytical tone dropped away. "Rowan. Someone put a charm on you?"
He opened his mouth. Nothing came.
Iris watched him try and her expression shifted into something harder than he'd seen from her outside the night of the attack. "How long have you been carrying this?"
The Fidelius pressed down and he couldn't answer that either.
"All right." Her voice was quiet and furious and steady all at once. "I'm going to find out what it is. And I'm going to break it."
She walked toward the library and something loosened in his chest that had been tight for weeks.