I don't own Harry Potter.

"Harry Potter, the Boy Who Lived," Voldemort said as he spotted Harry coming into the clearing, exactly as planned.

Voldemort's voice was low, vibrating with a mix of reverence and loathing. He was still reeling from the way Potter had enchanted his voice and his speech had resounded deeply within him.

It was strange.

Ever since Harry Potter had disappeared two years ago, following that encounter in the Ministry of Magic, where he had foiled the attempt to get ahold of the prophecy connecting them together, Voldemort had wondered what had happened to the boy; he could still feel him over the connection they had together, but without him being at Hogwarts because he had sneakily scored an exceptionally high result on his OWLs and NEWTs, fooling Dumbledore into thinking he was an average student for years, only for them to discover the truth was exceptionally different.

Still, for the last two years, the Boy Who Lived's departure had both worked to his advantage and caused problems. There were still some people out there who believed the boy should help save them, but they refused to do anything for themselves which gave his followers the edge.

But Dumbledore had been a problem until the trusting old fool had been killed because he had discovered Severus's true loyalties far too late. And even now the Order of the Phoenix was floundering.

They had made the mistake of depending on Dumbledore to win them the war; at the same time, Dumbledore's arrogance and ego had stopped him from gathering powerful members; aurors, healers, unspeakables, curse breakers and others who could make a difference. Dumbledore's weakness had worked against the old fool.

In the aftermath, Voldemort had little trouble taking over the country. Potter's little friends had been forced to return to the castle, and Granger and the red-headed Weasley were shown what girls of their status were destined to become, once they'd been interrogated.

In the case of the mudblood, who had proved conclusively she was not the modern-day Lily Potter, whom even Voldemort had been prepared to bring into his Inner circle because of her skills and knowledge which would have made her a formidable addition to his organisation, Granger would have been turned into a broodmare, or a servant. So much for the so-called 'brightest witch of the age.'

Lily Potter had been highly intelligent, although he still had questions about why she had even gone along with Dumbledore's insane plan; Potter, he could understand, but not someone as imaginative as Lily Potter, who had a highly logical mind. She would have thought of a better method of hiding. Sadly it had gotten her killed.

Both Granger and the Weasley boy had been questioned and interrogated more than once, and Voldemort had learnt that Dumbledore had tried, and failed, to recover one of his Horcruxes which in this case, turned out to be the Slytherin locket. The fact Dumbledore knew of his Horcruxes was worrying, and he had spent months checking on his anchors, but none of them had been touched. What was Potter playing at, and why was he doing this? It seemed to be so senseless. He had fought the boy more than once and knew he was highly efficient and ingenious. And he had gotten the sense that Harry was on to Dumbledore, although how he wasn't sure.

Voldemort mentally shook himself and continued looking at the matter from a different direction. While most of the Weasleys would be kept for selective breeding, some would be killed, and he was thinking that the half Veela one of them had married lately would be kept around, due to the potential power which he would need later on; the littlest Weasley would likely be brainwashed and become a loyal Death Eater, her pureblood heritage would have gained many suitors.

In truth, Voldemort wished he didn't need followers. His independent streak had rallied against the necessity since followers would cause him problems, and even worse their beliefs would have bogged him down since Voldemort genuinely did not care about the pureblood supremacism, especially after he discovered that Salazar Slytherin's historical fight with the other founders was actually nothing more than a silly historical tale that had been exaggerated and distorted over the centuries, so why should he believe something that truly had shaky foundations?

No, in truth Voldemort believed in one thing; his own power.

And he wanted to use that power to dominate the world, to subjugate it, to kill and conquer until there was nothing and nobody left alive to oppose him.

However, there were two flaws in his plans; the first was Dumbledore had begun stalking him, especially after that mess with the Chamber of Secrets once he had opened it, and he needed protection and decoys; because of Dumbledore's actions and the numerous hit-wizards he kept sending, Voldemort had found his political ambitions were shot to hell, so he had begun creating the Death Eater organisation. Second, once he had discovered the flaw with his Horcrux plan and the discovery if he simply linked himself to dozens of witches and wizards, Voldemort realised there was truly no other way he could just attack and mark them since the Unspeakables could find a way to remove the Dark Marks from their bodies, and it would simply take too long for him to design a Mark which he could brand people at random and hide it so it wouldn't be seen, never mind felt, unless he persuaded them to join his cause and to do that he would need to make them see the merits of joining him.

So he had needed to preach the pureblood agenda, even if he genuinely despised it, but for Voldemort, it was simply a means to an end, but as with all lies, if you tell it often enough, you come to believe it yourself, and the same was largely true here.

Even now, the words filled him with horror while projections of memories taken a long time ago, back when he was a child were shown to the students and to his followers alike; the spell was instantly recognised by Voldemort. It was difficult to master and required a master in the mind arts to prevent magical overload, but it was possible to create.

"We have come to the end of our long association, our long conflict. Today, Lord Voldemort…you will die. Last year I spent so much time with Dumbledore, not learning new spells for my repertoire to bring you down, but to teach me about you. Well, I can understand that part. I was really impressed by your control over your magic, probably one of the reasons why Dumbledore went out of his way to block my own magic."

All this was said when the young Tom Riddle was showing off his powers to Dumbledore.

"But you know, the dear old coot left behind such secrets with me…secrets that are mine to know. Tom. It's true, Riddle-me-this, I know everything. And kinda like the kid who peeks at his Christmas presents, it's a bit anticlimactic. Behind all the killing curses, and the snake-like face that better suits a horror movie monster, you're nothing more than a little kid, crying for mummy and daddy. It would be hilarious if it wasn't so pathetic….Ah, what the hell, I'll laugh anyway!"

To Voldemort's horror and fury, Potter had laughed. It wasn't a nice laugh. It began slowly, building up into a long, insane cackle that lasted for a few minutes, but it stopped before Voldemort could race into the castle and strangle him.

But then Potter finished. "I will deal with you, Voldemort. But there is something I want to know, about her."

Voldemort was taken aback, but then he realised what he meant, who was the her Potter had described, and he turned his attention to the teenager standing not far away from Bellatrix; if it weren't for the different hair colours, the style and the eye colour, you would have assumed they were mother and daughter from the way they were both furious at so many truths about him behind revealed. A part of Voldemort was proud of how far her brainwashing had come.

But Voldemort was curious; Potter knew about her? How?

He had been waiting with great patience for the boy to arrive after he had issued the ultimatum to the school at large, following Potter's insane and unexpectedly violent assault on the castle. The Dark Lord knew Harry Potter wasn't the Dumbledore of the new generation; the boy had an extremely vicious fighting style, augmented with the custom wands he had purchased earlier in the year.

Voldemort had been taken by surprise by the sudden attack; like so many people, he had come to expect the boy to be exactly as his followers described him to be, but he had quickly worked out he wasn't, some of the curses in his spell chain were extremely dangerous and nothing you would expect a so-called light wizard to use. It wasn't until Severus had come to him after Dumbledore's death that Voldemort had gotten more of the story of the boy's life.

Dumbledore had never realised if you placed a child in an abusive environment, they would be meek, but at the same time, they would also be sneaky and use the meek exterior as a mask while they made plans. Voldemort had seen it many times in the past and the fact Harry Potter had been able to hide his second wand, not to mention having an extensive repertoire of so many vicious and dangerous spells and possessed the ingenuity of a fighter who knew better than to wave their wand and launch curse after curse, while they used different spells to mix and match and confuse the opponent.

While Voldemort could understand why Dumbledore would place the Boy Who Lived in an abusive environment in order to make him meek and impressionable, he saw the weaknesses as well. Dumbledore had seen what kind of environment he had lived in himself and judged him based on what the muggles had said, and so he had based his initial impressions on that from there, but he didn't realise that when someone abused you because they didn't like what you could do, you were bound to find a child who was extremely sneaky.

"I wasn't expecting you to…do what you did," Voldemort said almost conversationally.

Potter wasn't looking at him, his eyes had found her. "So, Rose, I've found you," he smiled.

Voldemort turned and smiled as he watched Rose Potter step forward. "Ah, yes, your twin sister," Voldemort smiled with sadistic glee although this was disappointing since he had expected to reveal her to demoralise the boy. It would have been glorious for him to see the boy crumble, as he saw his twin wearing the robes of a Death Eater.

But the boy didn't look surprised to see his twin sister. He had partly expected this, but he didn't know when the boy had found out about her. "Tell me, how did you find out about her?"

Harry didn't reply at first, he was too busy studying his newly found sister, his twin. Her face, her hair and her eyes made her resemble their mother, but she wore Death Eater robes sans the mask. And the expression on her face was one of mocking fury that put Harry in mind of Bellatrix Lestrange.

"Hello, brother dear," Rose simpered, but it was marred by the look of cruel contempt on her face.

"I've known about Rose since I was 11," Harry confessed. "Hagrid gave me a photo album, full of pictures of my-our-parents; in one of the photos there was a picture of my parents holding me…and another baby. There was nobody else in the pictures, but I assumed it was a child my parents were babysitting that made little sense to me when I entered my third year and learnt they'd gone into hiding. I did a bit of investigating while keeping the teachers out of it, and I learnt about Rose. The goblins told me she was still alive, and she was being in the care of your Death Eaters."

"And you never tried to contact her?"

"I tried. Several times, but nothing happened," Harry countered. "The goblins told me that the Death Eaters caring for her had made enquiries into the Potter accounts," he tutted. "You're getting sloppy, Voldemort. Your plans are too easy to deduce. You want to kill me, so my sister would logically be the next in line to inherit the lot, and then you'll have control of it, etc, etc. Honestly, you really are boring!"

Rose saw red at the insult levelled at the Dark Lord. "Filthy Half-blood! Crucio!"

Harry jumped aside, flicking his wand and a tree was ripped out of its place in the ground it intercepted the torture curse, but before Rose or anybody else could recover, Rose suddenly disappeared, dropping her wand in the meantime.

"Where did she go?" Voldemort demanded. "Potter, where did she go?"

"Did you really think I would come here and let you continue brainwashing my sister without taking precautions? She's the only family I have, and your bastard scum can say otherwise about her being my sister, she is still my sister; the only blood relative I have left that's even worth a damn," Harry smirked. "I've known about what you have been planning to do for a long time, ever since I learnt about Rose's presence. I also heard how she was sorted into Hogwarts, surprising everyone including the teachers who had thought she was dead, and she began helping the Junior Death Eaters. Oh, and that's not all," Harry smirked, lifting his wrist where a black watch was fastened to his wrist. "Right on time…Now!"

All of the Death Eaters began screaming in agony as they clutched their wrists and their heads, feeling as if something was being torn out of them, out of their bodies. Out of their souls.

Voldemort was no better, and he collapsed to the ground, seeing his skin turning from a bone-light green white grey to black as if his body started to disintegrate.

"Everything you ever thought you knew…it was a lie!" He heard Potter, and he looked up and saw the little bastard standing above him; Voldemort looked up into his face and saw the boy grinning down at him. "I have her, have them; I have my sister…and I have your daughter. Got you, finally!"

Voldemort barely had a moment to process this before he fell apart. He had only been aware of Delphini for a short time; while he wanted to be immortal, he had his reasons for a child, and for Potter to have her….

Unfortunately, that was the last thought he would ever have, for he and his Death Eaters were dead.

Xxxx

Rose woke up slowly, noticing she was in a sitting room that was so small it didn't deserve the name. As she became more aware, she noticed that it was noticeably muggle. She sneered instinctively and out of habit; she had been curious about muggles before being shown examples of how degenerate and worthless they were, so she had begun looking down her nose at them, and she had made it a point to show the mudbloods at Hogwarts what she thought of them.

"Good morning, Rose."

Rose leapt to her feet, spotting him standing in a doorway, her hands digging into her robes for her wand instinctively but she found nothing. She searched her pockets for her wand for a good five minutes before Harry cleared his throat. "Is this what you're looking for?"

Rose looked up and snarled when she saw that Harry had her wand in his hand. "It's no good snarling; you're not leaving, especially since I've got plans for the both of you," he went on.

Rose frowned. "The both of you? What do you mean the both of you?" She demanded.

"Come and take a look," Harry turned and walked back into the room, and unable to hide her curiosity, Rose followed, but as she did she lifted her sleeve covering her forearm where her Dark Mark was and she pressed it with her finger.

Nothing happened.

She did it again, but she looked down at her forearm and her eyes widened when she saw that the Dark Mark was no longer there on her skin. The familiar skull with the snake protruding from the mouth was gone, almost as if it had never been there. Rose rubbed her arm in horror, trying in vain to find it, but it wasn't there.

"Oh, you've realised your Dark Mark is gone," Rose looked up into Harry's face; he had clearly come back for her when he'd realised she hadn't followed him inside.

"What did you do?"

"The Dark Mark is a magical tattoo. It performs several functions; it uses a protean charm for summoning the Death Eaters to Voldemort whenever he called - oh yes, Lord Voldemort is very much dead; but we'll get to that in a moment - and it links each Death Eater to one another, and to Voldemort. But its most important function is to fuel Voldemort with magic," Harry looked at her with pity. "How does it feel to know you've provided him with magic, Rose?"

Rose said nothing.

Harry hadn't been expecting a response. "I studied Thaumatology when I discovered much of the groundwork for the Dark Mark came from that; I knew sooner or later you would be marked, and I wanted a way to free you. And I did. I freed you from the Dark Mark when you were sleeping."

"Is that why I'm here? So you could save me? I don't need saving; I was on the right side!" Rose began speaking until she was shrieking in her twins' face. "You were on the side of hypocrites, the ones who preached Dark wizards are evil. You followed that old fool, Dumbledore, and look where that got him; too bad the Dark Lord gave the mission to do it to a weakling; he should have given it to me," she finished with a gleeful smirk.

Rose partly expected Harry to throw a fit, defending Dumbledore to the hilt. But instead, he smirked. "What makes you think I followed Dumbledore? Weren't you listening when I confronted Voldemort? I hated the old man; he had manipulated me, and our parents, for years, and it got them killed. He hired spies to stalk me, to prevent me from learning anything. I watched him for years and I didn't like what I saw. But let me show you what happened to your precious Dark Lord."

Harry walked out of the room, and he tapped the side of a pensieve covered by a cloth. A memory was already inside the projection bath, and he tapped the side of the bowl. Rose folded her arms and watched; before long she was shaking her head in horror at the sight of the Dark Lord, her fellow Death Eaters dying, but what stunned her was what her twin said about the Dark Lord's daughter. She hadn't known he had a daughter. She shook her head in denial, but she realised something. "Hold on, how long have I been here? If you've killed the Dark Lord after you snatched me, you couldn't have had time to do all of this!"

Harry nodded. "It seems you have some intelligence after all, and I'd thought it was messed up with thoughts of terrorism," he commented. "I used a Time Turner; Granger had used one a few years back, and I copied it. I killed Voldemort while my past self crept up behind you and put a portkey on you."

Rose growled at the thought of somebody getting the drop on her, but she had to admit Harry was clever with that plan; since he would have noticed her movements easily enough, although how he did it, she didn't know.

Harry studied her closely, smirking as he took in her reaction. She was pissed off, and frustrated, although she wondered how he would react in a moment when she discovered the rest of his plan. In the meantime, he was pleased by the way she had found herself here. It hadn't been difficult following her route when he'd returned to Hogwarts after laying down the foundations of his plan for the last few months. Using the Marauder's Map, Harry had effortlessly traced her, and it hadn't been hard to plant that portkey on her before coming here.

"What about his daughter?" Rose's question snapped him back into place. "What do you plan to do with her?"

"I'm not going to hurt her," Harry replied. "Or you. I am merely giving you the life you both deserve."

"A life we both deserve?" Rose sneered. "As what?"

"As a small family," Harry said.

"What? Are you that stupid?" Rose's sneer didn't vanish although she was curious about where this was going. "How do you think you can give me a family when you destroyed the one I had?"

Harry snorted. "Oh, you have no choice. As for Delphini, well I know she will grow up hated if anyone discovers the truth of who she was, and I don't want another child to go through the same misery that we both went through-."

"I was not miserable!"

"Really?" Harry lifted a brow. "How many times did you wish, deep down your real parents were with you, instead of people you didn't recognise at first? Oh, I'm sure you changed your tune as you grew older, but I know full well that at some point you must have wanted to be with your proper family. I mean, you know your last name is Potter, and not Yaxley, Malfoy, Nott, or one of the other more prominent Death Eater families. But it doesn't matter, we are going to be a family, Rose, whether you like it or not. And it should be starting…now."

Rose gasped as she suddenly collapsed to the ground, feeling like her body was being squeezed and pushed into itself. It took the young Death Eater a moment before she noticed her twin was in the same condition. "What have you done?"

"A de-ageing ritual," Harry said briefly.

"What?" Rose flinched at another burst of pain. "No!"

"Oh, don't worry, sis. You, me, and our other sister will be together again!" Harry gave a mad grin, but it quickly shifted as they both fell screaming. "I did this because you would never have willingly come with me, or forgotten about your past. So I decided to give the three of us a fresh start. We'll grow up in the muggle world, the three of us," he gasped, "and then we'll be inducted into Hogwarts, but we'll discover proof, both written and genetic that says we will be the biological children between Harry Potter and a muggle-born girl who was killed during the war."

"No!" Rose burst out before she shrank to a girl of 7 or 5.

"Yes!" Harry said as he shrank down. "We'll lose our memories…but we will gain new ones. We'll be a family, as we should have been years ago before Dumbledore and that wanker you allowed to brand you destroyed our lives, and we'll have a little sister of our own."

Rose screamed, followed closely by Harry.

Xxx

11 years later.

It had been years since the Blood War, and the damage to Hogwarts was now long since repaired and the once grand school had returned to its original glory. Right now, the four houses were waiting for the first years to be sorted into their new first years.

When Professor Granger unrolled the scroll and began calling the new students to be sorted. But her eyes widened and her breath caught in her throat before she looked at the staff table in confusion before she cleared her throat.

"Potter, Daniel!"

Muttering broke out over the hall, as a small boy who had short dark hair and emerald green eyes and yet looked identical to Harry came to the chair to be sorted.

The Sorting Hat was lowered…"SLYTHERIN!"

The Slytherin table didn't burst out into applause, they just clapped politely, although her keen eyes caught some of them not being happy although they were few and far between since many Death Eater families had died during whatever it was Harry had done to them; Hermione watched the boy walk to the new House Table, stunned. She hadn't even known Harry had a son until recently; while Professor McGonagall had known and told her, it was still a surprise that Harry had a hidden relationship with a muggle born with, who was now long since dead even though they hadn't found a body except for blood splatters which were confirmed to be his had been found at the site of Voldemort's last known spot.

Hermione cleared her throat and looked at the scroll again. She got another surprise. "Potter, Dahlia"

A girl, a feminine version of her brother, walked forwards and sat down on the stool. Hermione was taken aback by her beauty and grace, seeing not only her brother and father in her, but her grandmother (Lily) and her evil brainwashed Death Eater aunt in her. Even now, she still shuddered as she remembered Rose Potter's sneer as she tortured her…

"SLYTHERIN!"

Gracefully the girl stood up and walked to the Ravenclaw table, a smile on her face as she walked to the table. Hermione took a deep breath and read out, "Potter, Delphini."

Another girl walked towards the stool, her expression nervous as she walked to place the Sorting Hat on her head. By now, many were booing at the thought of the saviour's children being in that House. Hermione saw the other two children lean forward eagerly…

"SLYTHERIN!

Delphini leapt off the chair with a whoop of glee, and she dumped the sorting hat on the chair and hurried to her siblings. Hermione watched them as they chatted happily, remembering those times she and Ron had pretended to be Harry's friend before it blew up in their faces. She had every intention of making it up with Harry's kids.

Xxxx

Over the next few months, the Potter kids showed how talented in magic they were, and it wasn't any surprise they were in Slytherin given how cunning and gifted they were. Of course, there were those who condemned them as evil, but there were others who were stunned that while he was missing, Harry Potter had met a muggle-born girl he had rescued from the Death Eaters, and they'd had children before their mother died; there would have been enough time, given he had been missing for two years, although it was certain it was not long before Voldemort died that the children's mother had died, after their birth. The children were raised by their father and then they were sent into muggle care; Hermione did get close enough to the children to learn they'd had a tough life like their father, but unlike Harry, they had each other

And if she knew Harry, Hermione knew he was pleased his offspring had each other, as opposed to being alone.

Author's Note - I could not resist writing a Dark Siblings short story where Harry's sister was taken and raised (brainwashed) by Death Eaters, and was set up to be a weapon against Harry. But I like the idea of the tables being turned in such a way.