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The Dark Prince

Summary:

What if Peter Pettigrew had taken baby Harry Potter straight to the Dark Lord instead of revealing his location?

With the Potters thinking that their son is long dead, Harry is raised in the shadows as Voldemort’s heir — the Dark Prince. Harry grows into a powerful, dominant force loyal only to his father. Years later, when the Order captures the masked operative known only as the Dark Prince, the Potters discover the impossible: their long-lost son is alive… and he is their enemy’s most dangerous weapon.

An explicit, erotic dark AU exploring power, control, family betrayal, and forbidden attraction. Harem elements and intense dominant dynamics.

Inspired by Kurinoone’s “The Darkness Within”

Chapter Text

Chapter 1

The wind clawed at the windows of the small cottage in Godric’s Hollow, rattling the panes like impatient fingers. Rain lashed the roof in uneven sheets, and the fire in the grate popped and hissed as if it too sensed the unease that had settled over the house like a second skin. James Potter stood at the sink, sleeves rolled to his elbows, staring at the soapy water without really seeing it. His reflection in the dark glass above the tap was a pale smear of black hair and tired eyes.

Behind him, Lily moved through the kitchen with the quiet efficiency of someone who had learned to do everything one-handed. Harry was cradled against her chest in a soft blue blanket, his tiny fist curled around a lock of her red hair. The baby made small, contented sounds—half sigh, half coo—and Lily’s thumb traced slow circles on his back, the gesture more for her own comfort than his.

“He’s asleep,” she said softly, not quite a whisper. “Finally.”

James turned. The wooden floor creaked under his socked feet. He dried his hands on a tea towel that had seen better days and crossed the room in three strides. One large hand came up to cup the back of Harry’s head, fingers careful, as if the child might break under too much pressure.

“Dumbledore’s late,” he said.

Lily’s mouth tightened at the corner. “He’ll come. He always does when it matters.”

They both knew what mattered tonight. The war had teeth now. It had taken friends, taken safety, taken sleep. And somewhere out there, a prophecy existed—one that named their son as the one who could end it. Or be ended by it.

The Floo flared green before either of them could say more. Albus Dumbledore stepped through in a swirl of soot and midnight-blue robes, his half-moon spectacles catching the firelight. He smelled of lemon drops and old parchment and something sharper, like ozone after a storm.

“James. Lily.” His voice was calm, but the lines around his eyes had deepened since the last visit. “I’m sorry for the hour.”

James didn’t waste time on pleasantries. “The Fidelius. We’ve talked it over.”

Dumbledore inclined his head, waiting.

Lily shifted Harry higher against her shoulder. The baby stirred but didn’t wake. “We won’t use Peter,” she said. “Not as Secret Keeper.”

James’s hand found her waist, steadying. “We’ll be our own. Both of us. The secret stays here, with us. If anyone wants the location, they’ll have to go through Lily and me.”

Dumbledore was quiet for a long moment. The only sounds were the rain and the occasional soft breath from the child between them.

“That is… unconventional,” he said at last. “The charm is strongest when the Keeper is singular. But it can be done with two. The risk, however—”

“The risk is the same either way,” James cut in. His voice was low, rough with exhaustion and something harder. “If Peter’s the Keeper and something happens to him, we’re exposed. If we’re the Keepers, at least we control who knows. We don’t tell anyone. Not Sirius. Not Remus. Not even Peter after tonight.”

Lily nodded. Her free hand came up to rest over James’s on her waist. “We’ve already told Peter the secret once, when we first went into hiding. He knows where we are. But he can’t reveal it now. Not without our permission. And he won’t get that.”

Dumbledore studied them both, gaze lingering on the sleeping baby. “You understand what this means. If the charm holds, no one can find you. Not even your closest friends, unless you bring them here yourselves. The isolation—”

“We’ll manage,” Lily said. Her chin lifted. “For him.”

James’s fingers tightened briefly on her side. “We’re not losing our son to this war, Albus. Not to Voldemort. Not to anyone.”

The old wizard’s shoulders sagged, just a fraction. “Very well. We will perform the charm tonight. Both of you will be the Keepers. Peter will still be able to visit, of course—he already knows the location—but he will be unable to speak of it to anyone else. The magic will prevent it.”

Lily exhaled, some of the tension leaving her frame. Harry made a small sound and nuzzled closer to her neck. She pressed her lips to the top of his head, breathing in the warm, milky scent of him.

“Thank you,” she murmured.

Dumbledore performed the ritual with quiet precision—wand movements like calligraphy in the air, words in a language older than any of them. The magic settled over the cottage like a second skin, invisible but heavy, a pressure behind the eyes. When it was done, the fire seemed to burn a little steadier.

“Few will be able to find you now,” Dumbledore said. “Only those you choose to tell.”

James walked him to the Floo. At the hearth, the old man paused, one hand on the mantel.

“Peter may feel the slight… change in the magic. He may ask questions.”

“We’ll handle it,” James said.

Dumbledore’s eyes flicked to the baby one last time. “Protect him well, James. The night is long, and the darkness has many faces.”

Then he was gone in a rush of green flame.

The house felt smaller after he left. Quieter. James locked the Floo with a muttered charm and turned to find Lily watching him from the doorway to the sitting room, Harry still asleep against her.

“Come to bed,” she said.

They didn’t sleep much. Harry woke twice—once for a feed, once for no reason at all, just a sudden wail that had Lily rocking him by the window while James paced the room with his wand in hand, listening to every creak of the old house. The rain eased sometime after midnight. The wind died. The silence that followed felt heavier than the storm.

Peter arrived just after dawn.

James heard the knock first—three sharp raps, too quick, too loud for the early hour. He was already halfway down the stairs when Lily appeared at the top, Harry in her arms again, her hair loose and her eyes wary.

“Peter?” she called softly.

James opened the door.

Peter Pettigrew stood on the step, cloak soaked through despite the rain having stopped, face pale and shiny with sweat. His eyes darted past James into the house, then back to the ground. One hand clutched the strap of a small satchel like it might anchor him.

“James. Sorry—early, I know. I… I brought that book you mentioned. For Harry. The one with the moving pictures.”

James studied him. Peter had always been twitchy, but this was different. The man looked like he hadn’t slept. His lips were chapped. A muscle jumped in his jaw.

“Come in,” James said after a beat. He stepped aside.

Peter entered like a man walking to the gallows. He shrugged off his wet cloak and hung it on the peg by the door, movements jerky. Lily appeared in the kitchen doorway, Harry against her shoulder. The baby’s green eyes—James’s eyes—were open now, wide and curious.

“Peter,” Lily said. Her voice was warm, but her free hand stayed near her wand pocket. “You look exhausted. Sit. I’ll make tea.”

Peter’s gaze went to Harry and stuck there. Something flickered across his face—guilt, fear, hunger. He swallowed hard.

“I can hold him? Just for a minute?”

Lily hesitated. James saw it—the tiny pause, the way her arms tightened fractionally around their son. Then she nodded and crossed the room, transferring the baby carefully into Peter’s waiting arms.

Peter held Harry like he was made of glass and explosives at the same time. His hands shook. Harry cooed and reached for the man’s nose, small fingers patting at stubble.

“He’s getting big,” Peter said. His voice cracked on the last word. “Strong. Looks just like you, James.”

James leaned against the counter, arms folded. “We had Dumbledore here last night.”

Peter’s head snapped up. The baby made a small sound of protest at the sudden movement.

“Oh?”

“Fidelius,” James said. “We’re the Secret Keepers now. Both of us.”

Peter went very still. The only movement was the rapid rise and fall of his chest under the damp shirt. Harry’s hand found a button on Peter’s collar and tugged.

“You… you didn’t tell me,” Peter said. The words were barely audible.

“We’re telling you now,” Lily said from the stove. The kettle whistled. She poured water into three mugs, the motions deliberate. “The charm’s already up. You can still come and go—you already knew where we were. But you can’t tell anyone else. Not even by accident. The magic won’t let you.”

Peter’s throat worked. He looked down at Harry again, and for a moment James thought the man might cry. Instead, Peter’s mouth twisted into something that tried to be a smile and failed.

“Right. Of course. Makes sense. Safer that way.”

They drank tea. Peter stayed twenty minutes. He asked about Sirius, about Remus, about the latest news from the Order. His answers were a beat too late, his laughter a shade too loud. When he handed Harry back to Lily, his fingers lingered on the baby’s blanket for half a second too long.

“I should go,” he said at last, standing so fast the chair scraped the floor. “Things to do. You know how it is.”

James walked him to the door. Peter paused on the step, back turned, shoulders hunched against a wind that wasn’t blowing.

“James?”

“Yeah?”

“If anything ever… if you need me. For anything. You know I’m here. Right?”

James clapped him on the shoulder, the gesture firm. “We know, Pete. Get some sleep.”

Peter nodded once and disapparated with a crack that sounded too loud in the quiet morning.

Lily appeared at James’s elbow, Harry now in a sling against her chest. “He’s scared.”

“We all are,” James said. But he didn’t move from the doorway for a long time, watching the empty lane where Peter had stood.

Night fell again.

The cottage was dark except for the low glow of a single lamp in the sitting room. James and Lily had gone to bed early, the exhaustion of the previous night and the tension of the day catching up to them. Harry slept in the wooden crib beside their bed, one arm flung above his head, the other curled around a stuffed dragon Sirius had sent weeks ago.

The house creaked. The wind had picked up again, moaning around the eaves.

Peter stood in the shadows of the garden, under the old oak that had been there longer than the cottage. He was under a Disillusionment Charm, but the magic flickered at the edges, unstable. His wand was clenched so tightly in his fist that his knuckles were bloodless.

He had tried. Merlin, he had tried. He had gone to the Dark Lord with the information he had—the address, the description of the wards, everything. But when he opened his mouth to speak the location, the words died in his throat. The Fidelius, newly cast with James and Lily as Keepers, clamped down like iron jaws. He could think the address. He could picture every stone of the cottage. But he could not say it. Could not write it. Could not even think the words in the presence of anyone who might carry them to his master.

Voldemort had been… displeased.

The Cruciatus had lasted hours. Peter still tasted blood at the back of his throat from where he had bitten through his tongue.

“Bring the boy,” the Dark Lord had whispered when the pain finally ebbed enough for Peter to hear. “If you cannot bring me the location, bring me the child. Do it tonight, or I will find a use for your mother’s bones instead.”

So here he was.

Peter’s feet felt leaden as he crossed the garden. The back door was locked, but he had a key—Lily had given it to him months ago, “just in case.” His hand shook so badly he dropped it twice before the lock clicked.

Inside, the house smelled of woodsmoke and baby powder and the faint floral scent Lily wore. Peter’s heart hammered against his ribs. He moved through the kitchen on silent feet, past the table where they had drunk tea that morning, past the sink where James had stood.

The stairs were the worst. Every step seemed to scream under his weight. At the top, he paused, listening. No movement from the bedroom. Only the soft, even breathing of sleep.

The nursery door stood ajar.

Peter pushed it open.

Harry’s crib was bathed in the faint silver light from the window. The baby slept on his back, mouth slightly open, the stuffed dragon tucked under one arm. His black hair was a wild tuft against the white sheet. The lightning-bolt scar from the prophecy—or whatever it was—hadn’t appeared yet. He was just a baby. Just a child.

Peter’s vision blurred. He wiped his eyes with the heel of his free hand.

“I’m sorry,” he whispered, so low it was almost nothing. “I’m so sorry, Harry.”

He raised his wand.

“Stupefy.”

The red light was muted, almost gentle. It hit Lily first—she had woken at the sound of the door, sitting up in bed, wand half-raised. Her eyes went wide, mouth opening on a silent cry, then she slumped back against the pillows, unconscious.

James was faster. He rolled out of bed, wand already in hand, but Peter was desperate. The second Stupefy caught him mid-stride. James crumpled to the floor beside the bed, glasses askew, one arm outstretched toward his wife.

Peter stood in the doorway, chest heaving. The house was silent again except for the wind and Harry’s soft breathing.

He crossed to the crib.

Harry’s eyes were open now—wide, green, staring up at him with the solemn curiosity only infants possessed. He made a small sound, not quite a cry, and reached toward Peter’s face.

Peter’s hand shook as he lifted the baby from the crib. Harry was warm and heavy and smelled like milk and sleep. The blanket tangled around his legs. Peter wrapped it tighter, tucking the edges under the small body.

“I have to,” he whispered to the child. “He’ll kill us all if I don’t. You… you’ll be safe. He said he just wants to see you. Just to talk.”

The lie tasted like ash.

He turned to leave.

James groaned from the floor.

Peter froze.

James’s hand twitched. His eyes fluttered open, unfocused. “Lily…?”

Peter didn’t wait. He clutched Harry to his chest and ran.

The disapparition was rough, uncontrolled. The world twisted and spat them out in a narrow alley behind a derelict building on the edge of Knockturn Alley. Peter staggered, nearly dropping the baby. Harry began to cry—high, thin wails that echoed off the damp brick.

“Shh, shh,” Peter hissed, rocking him awkwardly. “Please, Harry, please be quiet.”

He hurried through the shadows, past shuttered shops and the distant sounds of revelry from the Leaky Cauldron. At the end of the alley stood a plain wooden door with no handle, only a small iron knocker shaped like a serpent. Peter knocked three times, then twice, then once.

The door opened inward without a sound.

Inside, the air was cold and smelled of damp stone and something metallic. Torches burned with green flames along the walls. Death Eaters in dark robes stood in a loose semicircle, masks in place or dangling from belts. At the far end of the long hall, on a raised dais, Lord Voldemort sat on a throne carved from black wood and bone.

Nagini coiled at his feet, tongue flicking.

Peter dropped to his knees the moment he crossed the threshold. He held Harry out in both hands, arms trembling.

“My Lord,” he gasped. “I brought him. The boy. The Potters made themselves the Secret Keepers—I couldn’t speak the location. I couldn’t. So I took him. Like you commanded.”

The hall was silent except for Harry’s crying and the soft scrape of scales as Nagini lifted her head.

Voldemort rose.

He moved like smoke, robes whispering against the stone. Tall, unnaturally so, pale skin stretched tight over sharp bones, red eyes burning like coals in the green torchlight. He descended the dais steps one at a time, each footfall deliberate.

Peter kept his head bowed, eyes on the floor. Harry’s cries grew louder, echoing.

Voldemort stopped in front of them.

“Give him to me.”

Peter obeyed instantly, lifting the bundled baby higher. Voldemort’s long, pale fingers—more like claws—closed around the child. He lifted Harry as if weighing him, turning him slightly so the torchlight fell across the small face.

The crying stopped.

Harry stared up at the Dark Lord with those wide green eyes—Lily’s eyes—and made a soft, curious sound. One tiny hand reached out and brushed against Voldemort’s robe.

Something shifted in the red eyes. Not softness. Never that. But interest. Calculation. A flicker of something almost like recognition.

Voldemort carried the child to the center of the hall and set him down on the cold stone floor. Harry kicked his legs, blanket falling open, and cooed at the high ceiling.

“You failed to deliver the location,” Voldemort said. His voice was high, cold, carrying without effort. “But you brought me the child instead. Perhaps you are not entirely useless, Wormtail.”

Peter pressed his forehead to the floor. “Thank you, my Lord. Thank you.”

Voldemort circled the baby slowly. The Death Eaters watched in perfect stillness.

“The prophecy spoke of a child who would have the power to vanquish me,” Voldemort continued. “This boy. Harry Potter. Son of James and Lily. The one marked by fate to stand against the Dark Lord.”

He stopped. His wand appeared in his hand, yew and phoenix feather, the wood gleaming.

“And yet here he is. Delivered into my hands by a coward who could not even speak a secret.”

He raised the wand.

“Avada Kedavra.”

The green light exploded from the tip, filling the hall with a sickly glow. It struck the baby square in the middle of his head.

For a heartbeat, nothing happened.

Then the magic twisted.

The air itself seemed to scream. The green light recoiled, surging back along its own path like a snake striking its tail. It hit Voldemort in the chest with a sound like thunder cracking inside a bottle. The Dark Lord staggered, red eyes flaring wide. His wand flew from his hand and clattered across the stone.

Harry’s scar flared into existence—a jagged lightning bolt burned into the pale skin of his forehead, glowing white-hot for a single second before fading to silver.

The baby began to cry again, but it was different now. Stronger. The sound carried power, ancient and raw, vibrating through the floor and up into the bones of every person in the hall.

Voldemort straightened slowly. One hand pressed to his chest where the rebound had struck. No blood. No wound. But something had changed. The connection between them—the scar, the magic, whatever twist of fate had turned the Killing Curse back on its caster—thrummed like a live wire.

He looked down at the child on the floor.

Harry’s cries quieted as if sensing the attention. He kicked his legs and stared up at the tall figure above him with solemn green eyes.

Voldemort’s lipless mouth curved.

“Fascinating,” he murmured. “The curse rebounded. Not destroyed me… but marked us both. A twist of fate, indeed.”

He bent and scooped the baby into his arms once more. Harry settled against his chest as if he belonged there, one small hand fisting in the dark fabric of Voldemort’s robe.

The Dark Lord turned to face his followers. Every masked head was bowed. Bellatrix Lestrange stood at the front, eyes wide with manic delight, hands clasped under her chin.

“Behold,” Voldemort said, voice echoing. “The child who was meant to be my end. He has survived my Killing Curse. The magic itself has claimed him. From this night forward, he is mine. I will raise him as my own. He will be my heir. My Dark Prince.”

A ripple went through the Death Eaters—shock, awe, fear. Bellatrix let out a high, delighted laugh that bordered on a sob.

“My Lord,” she breathed. “The honor. The power he will have under your guidance—”

Voldemort’s gaze swept the room, silencing her.

“Any who question this decision will die slowly. Any who harm the boy will die screaming. He is under my protection now. And one day…” He looked down at the child in his arms, at the green eyes that watched him without fear. “One day he will stand at my right hand and together we will burn this world clean.”

Harry made a small sound—almost a laugh—and reached up toward Voldemort’s face.

The Dark Lord allowed the tiny fingers to brush his cheek.

“Take him to the nursery prepared in the east wing,” he ordered a waiting Death Eater. “See that he is fed and warm. I will attend to him myself shortly.”

The man bowed deeply and took the baby with reverent hands. Harry went without protest, still watching Voldemort over the man’s shoulder until they disappeared through a side door.

Voldemort retrieved his wand from the floor. He flexed his fingers around it, testing the connection, the faint new thrum of magic that now lived under his skin.

“Wormtail.”

Peter flinched but crawled forward on his knees. “My Lord?”

“You have done well enough. For now. You will be rewarded… and watched. Fail me again and I will feed you to Nagini piece by piece.”

“Yes, my Lord. Thank you, my Lord.”

Voldemort turned away, robes swirling. At the dais he paused, one hand resting on the arm of the throne.

“Begin the search for the Potters,” he said without looking back. “They will be desperate now. They will make mistakes. When they do, bring them to me. Alive. I wish to… speak with them about their son.”

Bellatrix’s laughter followed him as he ascended the steps.

In the east wing, behind locked doors and layered wards, a baby boy with a new silver scar on his forehead slept in a cradle carved with serpents. A single green-flamed lamp burned low beside it.

Voldemort stood in the doorway for a long time, red eyes fixed on the small form.

“Harry,” he said quietly, tasting the name. “My son.”

The child slept on, unaware that the world had just shifted on its axis.

Outside, the wind rose again, carrying the first hints of a storm that would last for years.

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