"No —"
Dumbledore was already moving, spell forming, but the curse had already landed and Kevin's body was already still, and the word came out of him not as a shout but as something lower and rougher than that.
He'd watched students die before. He'd carried that particular weight for a very long time. He knew the shape of it.
This felt different.
Because he'd known. He'd known Gellert was here. He'd known about the contract. He'd lifted the restrictions anyway — had looked at that earnest, vulnerable performance in the office and told himself he understood what was real and what wasn't — and Kevin was dead on the valley floor with Grindelwald's wand still smoking.
The golden light that flared from both Grindelwald's and Voldemort's right hands was automatic. The Unbreakable Oath sealing and dissolving in the same instant — the conditions fulfilled, the bond burned away.
Voldemort glanced at Grindelwald.
Grindelwald's wand was already levelled at his head.
Voldemort Disapparated with a crack, and the Killing Curse passed through air.
So. That was how it was going to be.
Dumbledore didn't wait to understand it. He opened his hands and the lava came — not a spell with an incantation but something deeper than that, drawn from whatever furnace a century of accumulated power lived in. It poured outward in a sea of fire that would have consumed most wizards completely.
Neither Grindelwald nor Voldemort was most wizards. They were driven back. They were forced to work together to hold it off, which meant — for these few seconds — they couldn't do anything else.
Dumbledore drew his other wand. The one he'd carried his entire adult life before the Elder Wand. His reliable wand. He raised it.
The Anti-Apparition Jinx sealed the valley.
The Wall of Beasts sealed the ridgelines.
The Forbidden Entry sealed the air above.
Layer after layer, tight and interlocking, the way he'd learned to do it when he was still young enough to have needed to practice. No one was walking out of this valley until he allowed it.
His eyes, when they found Voldemort and then Grindelwald across the smoke and distance, were very calm. The kind of calm that had nothing to do with peace.
Back at Hogwarts, the Death Eaters had been arriving for twenty minutes.
The hills around the Black Lake were thick with black robes, more coming every minute, Apparating in from points south and east. The scale of it was staggering — someone had been building toward this for months, and no one in the Order had seen it coming.
McGonagall had the castle organised in under five minutes. Third years and below through the secret passages, gone. Aurors through the Floo, still outnumbered but holding. Upper students split: some evacuated, most at the walls, the heaviest hitters from the advanced class fanned out along the battlements under Harry's direction.
The great shield charm that McGonagall raised over the castle was a thing of considerable beauty, as such things went — white shot through with gold, trembling slightly with the effort of the wizards feeding into it. It settled over the rooftops and sealed.
The decorative stone warriors along the castle's exterior came to life at a flick of her wand, leaping from their pedestals to the bridge and the grounds, taking up positions at the gates. They would not hold for long. They would hold for now.
"Hermione." Harry, on the battlements, spoke without turning. "Any word from Kevin?"
Silence behind him.
He turned.
She was three steps back from the group, standing completely still, both hands wrapped around her left wrist. Her face was white.
"Hermione?"
He moved to her quickly. Up close he could see what she was holding — the bracelet, which should have been seamless silver, was in pieces. The linked segments had simply come apart, lying across her palm in fragments, the enchantment that had bound them dead and cold.
The soul-bond between them — five years of slow-built connection — had snapped.
Harry reached out. "Hermione —"
"I can't —" Her voice broke on the second word. She tried again. "I can't feel him. He was there and now he's —"
She didn't finish. She didn't have to.
Harry looked at the broken bracelet in her cupped hands and said nothing, because there was nothing to say that wouldn't be a lie or a false comfort, and she deserved neither.
"He's not gone," he said finally. Not because he knew it was true. Because he had to say something, and because Kevin had survived things that would have killed anyone else, and because giving up on him before they had proof felt wrong in a way that ran deeper than hope.
Hermione looked at him. Tears were moving down her face silently, the way tears moved when someone was past the point of fighting them.
She looked back down at the bracelet.
"Kevin," she whispered. "Kevin, where are you."