Serpentine Brilliance

Harry Potter - J. K. Rowling
G
Serpentine Brilliance
Summary
Harry Potter, forced to hide his intellect from a young age, grows into a brilliant and calculating mind shaped by survival. At Hogwarts, he is Sorted into Slytherin, where ambition and cunning sharpen his talents further. But he’s not dark for the sake of darkness—Harry wants to protect, to heal, to fix what’s broken. And he’ll outwit the entire Wizarding World if that’s what it takes.
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Sealed and Watched

“BOY!”
Uncle Vernon’s voice snapped through the air like a whip.
Harry didn’t flinch
He’d expected it. The moment the letter had landed in his hand, he knew the quiet wouldn’t last. Vernon Dursley never let Harry have anything that made him smile—let alone something that made him feel like he mattered.
Harry tucked the letter into the waistband of his too-large trousers, hidden beneath the sagging hem of Dudley’s cast-off shirt, and turned toward the kitchen with a blank expression.
He moved through the hallway with the practiced grace of someone who knew which floorboards creaked and which angles kept him out of Dudley’s line of sight.
Vernon was waiting at the kitchen table, red in the face and hunched forward like a toad about to pounce. Aunt Petunia hovered near the stove, eyes narrowed to slits, her knuckles white around a wooden spoon she wasn’t using.
The letter Vernon held trembled slightly in his hand—crushed at the corners, already torn open. Harry let his eyes flick to it just once. It was not the one from the mat.
“Care to explain this?” Vernon hissed, brandishing the parchment like it was filth. “More of your nonsense, is it?”
Harry tilted his head slightly.
“I don’t know what you mean,” he said in the polite, toneless voice that always seemed to make Vernon angrier. He stepped fully into the room, carefully placing himself just far enough from the table to avoid a swinging arm, just close enough to show he wasn’t afraid.
Vernon threw the letter down on the table. The heavy parchment made a dull thwack against the wood. Harry’s fingers itched to snatch it up, to compare the handwriting to the one he’d hidden away, but he resisted. Let Vernon think he was confused. Let him reveal things in his ranting.
“Someone’s been sending you letters!” Vernon shouted. “Nonsense about—about schools and wizards and—and freakish things!”
Petunia made a noise in the back of her throat like she was about to be sick.
Harry’s eyes didn’t waver from Vernon’s. “I haven’t received any letters.”
That was true, technically. He’d found one. He hadn’t been given one.
Vernon sputtered. “Don’t you lie to me, boy! I saw you with it—stuffing it in your trousers like some little criminal—”
“Vernon!” Petunia snapped, scandalized.
Harry’s lips twitched. Not a smile, exactly. Just a faint quirk of satisfaction. He wasn’t going to win this battle, not yet, but he could unbalance them. Keep them guessing.
“Where did it come from?” he asked quietly. “You opened it. You tell me.”
That startled Vernon more than it should have. He hadn’t expected curiosity—he’d expected denial or defiance.
Petunia stepped in, voice shrill. “You are not going to that—that place! We swore we’d stamp it out of you! We swore to your dum—”
Harry blinked.
dum? who was that?
Interesting.
“Who sent it?” he pressed. “Who even knows I live here?”
“No one!” Vernon barked, far too quickly. “No one knows anything! And we’re going to keep it that way.”
That was the real fear. Not the letter itself. Exposure.
They hadn’t just hidden him—they’d tried to erase him.
Harry filed that away like a knife slipped into his belt.
Without another word, Vernon snatched up the letter, crossed to the fireplace, and shoved it deep into the flames. The parchment hissed, curling in on itself like a dying leaf. The green ink turned black.
Harry didn’t move.
They thought fire could keep secrets.
But someone out there had written to him—knew exactly where he lived, how he lived, even the specific humiliating detail of the cupboard under the stairs.
That person had not sent a single letter on accident.
And Harry didn’t think they were done.

They burned the letter, but it didn’t matter.
The fire was a show. A desperate bid to snuff out something they didn’t understand—and never could. Harry had seen that in Uncle Vernon’s eyes: not just fury, but fear.
And that fear… felt good.
Not because he wanted them afraid of him—he didn’t. But because, for once, they couldn’t pretend he was nothing. Someone, somewhere, saw him. Wanted him. Had gone to absurd lengths to reach him.
That night, the house was stiff with tension. Dinner passed in silence, Vernon’s face still flushed and twitchy. Petunia barely touched her food. Dudley muttered complaints until Vernon snapped at him, which shocked everyone—including Vernon.
Harry ate quietly. Watched. Waited.
At 9:13 PM, the Dursleys double-checked the doors and windows, as if expecting another letter to claw its way through the cracks.
At 9:57, they locked him in his cupboard. that wasn't new.
Harry waited an hour after the last creak of floorboards, then slipped out with practiced ease.
The house groaned around him. The clock ticked like a countdown in the dark.
He carefully pulled out his letter. He sat cross-legged on the thin mattress, flashlight wrapped in his jumper to dim the glow, and finally pulled the letter into his lap like a sacred thing.
He hesitated.
His fingers trembled—not with fear, but with anticipation sharpened to a blade’s edge.
Then he broke the wax seal.
The parchment crackled softly as he unfolded it. The ink shimmered faintly, even in the muted light.

HOGWARTS SCHOOL of WITCHCRAFT and WIZARDRY

Headmaster: Albus Dumbledore (Order of Merlin, First Class, Grand Sorc., Chf. Warlock, Supreme Mugwump, International Confed. of Wizards)

Dear Mr. Potter,
We are pleased to inform you that you have been accepted at Hogwarts School of Witchcraft and Wizardry. Please find enclosed a list of all necessary books and equipment.
Term begins on 1 September. We await your owl by no later than 31 July.

Yours sincerely,
Minerva McGonagall
Deputy Headmistress

Harry read it once, twice, then a third time more slowly.
A low breath escaped him.
There were a dozen questions clawing at his mind—but the one that rose loudest was also the simplest:
Why?
Why him?
He had no wand. No spells. No knowledge of magic beyond the strange things that happened when he was angry or afraid. And yet… this letter didn’t hesitate. It spoke as though this had always been his path.
And deep down, some part of him agreed.
He turned to the second parchment. A list of supplies, textbooks, robes, even a pet. An owl, of all things.
Harry squinted at the titles: Magical Theory. The Standard Book of Spells, Grade 1. One Thousand Magical Herbs and Fungi.
There were patterns here, systems. The structure of an education built on logic and rules—even if it was for wands and dragons instead of equations and elements.
He found himself cataloging them automatically. Thinking of questions. Not just what the spells did, but why they worked. What determined wand movement? Was it physics, or something less tangible? Could it be mapped, quantified?
Was this magic teachable, or instinctual?
He wanted to know everything.
But even more than that, he wanted to understand why the Dursleys had tried so hard to keep this from him.
They knew. They’d always known.
Aunt Petunia’s reaction, Vernon’s immediate destruction of the letter—it hadn’t been confusion. It had been practiced hatred.
Hatred of what he was.
No.
Of what he could become.
He folded the letter carefully, slid it back beneath the floorboard, and laid down on his mattress, staring up at the underside of the stairs above him
His heart was beating too fast to sleep.
And something within him—something old and quiet and sharp—had begun to wake.

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