I've been working in this for a while and figured oh well why not post it? It just sitting in my imagination. Yes, I know I haven't updated my other story but it's coming through I promise.

Summary: How can one act of kindness change the fate of the whole world? On Halloween night 1981, someone was in the wrong place at the wrong time, or maybe they were the right ones. Dark!AU

Enjoy!

Chapter 1: Green

Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much. They were the last people you'd expect to be involved in anything strange or mysterious, because they just didn't hold with such nonsense.(1)

Nonetheless, they were.

In hindsight, it wasn't that strange of an occurrence to visit a relative, much less one as close as a sibling, but the Evans sisters had never been close. In fact, they hadn't even talked since the last family wedding -Lily's- when both of their fates had been sealed. Not everyone was aware that Petunia had a sister, and anyone that was, would be extremely surprised if they could see her right now; especially if one considered the strange demands of her sister.

The Dursleys were driving around the town in a completely out of place car -it wasn't luxurious or new but it was well cared for and very clean-; they hadn't seen any other vehicle, new or old. They had been driving around for about an hour now, it was time to admit they were lost. But there was no way in hell that Petunia Dursley would stop and ask for directions in a place like this. She knew. She could sense it. These people were not like herself, they were like her sister; weird, bizarre, freaks.

She shook her head trying to get rid of the thoughts. If she wanted this to work she would have to stop thinking like that. It would be hard, granted, but Petunia was nothing if not determined. She sighted and addressed her husband.

"Honey, we will have to ask for directions." She could see he was about to protest –seriously, what was it with men and directions?-, but she placed a hand in his arm to stop it.

"Look, there is someone we can ask" She pointed to a random passerby in an attempt to distract him.

Vernon Dursley, wasn't very convinced by his wife's sudden desire to reconnect with her sister in the first place, but he complied because he loved her, and he really didn't have any other option. Petunia had already made up her mind when she retold her plan; she would go ahead either with or without his approval. Besides, he knew it was not a sudden desire, it was actually a perfectly logical decision based in long hours of deliberation.

However, he didn't need to ask for directions, they were not lost. But still, he complied and stopped the car; Dudley was getting restless in his baby seat, anyway. The passerby was dressed completely normal, which reassured him a little. Petunia was the one who spoke.

"Excuse me sir, do you happen to know the path to the Bagshot residence?"

The man seemed quite happy to be of help to the outsiders. "You have to turn right in the next street, then left after four streets and follow straight until the crossroad, there you only need to take the dirt road, but I should warn you, the Bagshot Manor has been abandoned for years." Vernon thought he smiled too much. Petunia ignored the warning and thanked the stranger.

They were able to reach their destination in no time. The house was big but not big enough to be considered a manor, thought Petunia. It indeed looked abandoned and decayed but Petunia knew better. She had been warned that her eyes would try to trick her.

Vernon opened the door for her and she retrieved Dudley from his baby seat, they reached for the bell but the door was opened before they had the chance to ring the bell. And old and oddly dressed woman opened the door –not completely thought, only enough to fit her head-; she didn't say anything but looked closely at Petunia and her family like she was trying to see inside them. Needless to say Petunia didn't like it. She knew that stare; she herself used it dairy. She cleared her throat.

"My sister told me you had something for me." It was straight to the point and probably rude but Petunia felt no obligation to this woman.

Bathilda Bagshot took her time to acknowledge the question. She felt the envelope in her pocket burn. She needed to be thoughtful in this; lives depended on it, on her. Bathilda had strict orders to burn it to ashes if she suspected this was not Petunia Dursley herself or if there was even a hint that she was under any outside influence, she would even eat the ashes if that meant keeping the Potters safe.

Lily Potter had described her sister in painstaking detail, and to less degree, her brother-in-law, she had mentioned the baby but she didn't have much to go by. They matched their descriptions perfectly but it was not enough.

"Who was the first wizard you ever met?" asked the old woman.

Petunia's first instinct was to answer that it had been her, gag, brother-in-law because the memory of they small boy with terrible hygiene had not been acknowledged by her sister in years, and even longer by Petunia.

"Severus Snape"

"What is Lily's favourite muggle book?"

"How am I supposed to know? She reads everything!" Petunia gasped in horror when she heard her own words leave her mouth but the answer seemed to satisfy the old woman.

"What is your favourite colour?" Bathilda had thought it was a rather silly and not actually helpful question but Lily thought otherwise.

Petunia was confused at first, why would Lily ask such a dumb question? While she didn't have the girl –because Petunia still thought of Lily as a girl, a stupid girl who didn't know what she was getting herself into- in a high regard, she had always thought that she was at least academically smart, not that she would ever say it out loud. So maybe she had a reason to ask this seemingly common question, the girl had always thought a little too out of the box.

"Green"

Bathilda opened the door completely to allow them entrance but they weren't interested. She extended her hand with the envelope in it. Petunia took it and opened immediately, there were only four words scribbled in a small, uneven writing.

Potter Cottage, Godric's Hollow

"That is not an address, how are we supposed to find it?" Petunia inquired at the same time that she folded the piece of paper and tried to store it in her purse but the old woman grabbed her hand tightly and snatched the paper. Petunia wanted to protest but the sight of the now burning paper quieted her.

"Return to the town, the signs will surely guide you now that you can see them." She didn't appeared to have anything else to say so the Dursleys left.

Just as the old lady had predicted, signs that Vernon was sure hadn't been there before, constantly pointed them to the 'Potter Cottage' as if it was a wide known tourist attraction. They parked in front of it.

Knowing that her sister's husband –that was better than the other term- was a pretentious bastard, she had expected to see at least a small manor or a humungous house. Instead there was a decent sized cottage that didn't seem luxurious but comfortable. She was not pleasantly surprised. Actually she was pissed. How dared she? How dared she pretend to be normal? To be nothing more than a town wife, a common housewife who… Petunia stopped death on her tracks.

This was not what she had come for.

She was a woman on a mission and she had goals to accomplish. It was already getting dark and she definitely didn't want to spend the night with her sister; it was a step a little too far, a little too soon.

The Dursleys descended the car and together they marched to the Potter Cottage. This time, they had the chance to ring the bell even if the door had been opened too quickly for their taste.

It was not Lily as Petunia had been expecting but her equally annoying husband.

"Quickly, get inside." He all but shoved them inside the house and closed the door with more than just regular locks.

He breathed a sight of relief and turned to them. His previous expression changed drastically to a huge grin.

"Petunia! Long time no see! And you brought everyone! Lily said you would come but this is great! Is that Dudley? He is huge! Come, he can play with Harry while we talk." To Petunia, James Potter sounded just as annoying as always but to anyone who actually knew him, James' voice was a little too cheerful, a little too smooth and a little too smiley. He led them to the sitting room.

"Where is Lily? I came to talk to her." Petunia stated. She wouldn't be able to stand his presence for much longer.

"She'll be here soon, she is just dressing Harry. You know how easily kids get dirty, and she takes every opportunity to change his clothes. She must have bought the whole baby section." Lied James.

"Do you want anything to drink? Water, tea, butt… uh… beer?" he continued, entering the kitchen.

"Tea would be fine thank you, but could you do it um… manually?" Petunia followed.

"Of course, Lily mentioned your… er… allergy."

She wasn't planning on taking a drop.

"Can I look for her?" Petunia insisted.

"She won't be long." Retorted James. He had always been a master of conning and smooth talking, he could convince two muggles that everything was all right, he had convinced himself after all.

They waited for the tea in silence and just when Petunia was about to lose it, Lily came into the room.

"Petunia! I've missed you so much!" Apparently, twelve years of not getting along were not an issue for her. The red head embraced her older sister and in Petunia's defence, she was only rigid for four seconds of the five-second hug.

"I need to talk to you Lily." Said the blonde "Alone" she continued, ready to glare at her sister's husband but he had already vanished from the kitchen.

"We are alone" The red head confirmed.

Petunia wasted no time searching for a way to begin. She had planned this.

"Lily, a month ago, I saw a headline about a gang that was murdering people, I didn't gave it much thought at the time, but I have seen more headlines like that one. They have come up more and more often, I know. I recognize the signs. They were all murdered in the same way, apparently a heart attack or gas inhaling, the police think it is some kind of drug but I know. The families are always the same; they have a son or daughter, a nice or nephew that goes to boarding school, that is gifted. I know I said I didn't need your protection when you offered and I didn't come here today to ask for it because I still think that not acknowledging you can keep me safe, but it is not enough. I couldn't risk anybody linking me to you but the thing is they already have." Lily stopped her at this.

"Have they attacked you? Threatened you?" Her hand went to her pocket and Petunia knew what she was looking for.

"No, I don't think I would come out alive if they did, do you?" But it was apparently a rhetorical question because Petunia continued. "I have come here today because it is not only me anymore, I have Vernon and Dudley now and I know I can't ask for your protection for myself or Vernon but Dudley can't get dragged into this." Petunia stopped to give Lily time to respond or maybe just to get a breath but Lily took advantage of it anyway.

"I'll give you the best protection I can, all of you, you, Dudley and Vernon. You are all family." Lily felt so very relieved, as if twelve years of loneliness had been lifted from her shoulders.

"Tomorrow, we'll go tomorrow. We need to make some arrangements, but it shouldn't matter. I'll be the Keeper, James could do the charm, no Sirius would be better. We can't tell Dumbledore…" She trailed off, the outline of a plan already in mind.

Petunia recognized the name.

"Dumbledore? Your old Headmaster? What does he have to do with all this?" questioned Petunia.

"He is not only a Headmaster, he is the most powerful wizard alive and he is leading the war against Voldemort." Replied Lily automatically.

"Why? Didn't you have a Ministry or some kind of government? Why is a Headmaster orchestrating a war? That is wrong in so many levels" Petunia couldn't understand, Lily attributed it to being a muggle.

"And if he is so great and powerful, why can't he know? Couldn't he help?" Continued Petunia. Lily started to panic, the conversation was going into dangerous territory, she couldn't tell her sister that they weren't under any circumstances allowed to leave the house. Her husband and best friend would not be easy to convince but she was sure she could do it because lockdown was driving James crazy and Sirius would do anything to make them happy. They would go, perform the Fidelius with James as the lookout, Sirius as the caster and herself as the Secret Keeper, and return in record time. Nobody else needed to know. But everything would go to waste if her sister found out she was at the top of Voldemort's hit list, she would run and go back to pretending Lily didn't exist.

Fortunately, she was saved from answering by James entering the kitchen.

"Lily can you give me some sweets? I swear they're not for me." He said.

"Don't give them too many" She reached for them. "Actually, I'll give them to the kids personally. Last time you gave sweets to Harry, he ended up with a two day long sugar high." She motioned for Petunia to follow and she did even if she was worried by the lack of answers.

In the sitting room, Dudley and Harry were playing with Harry's construction blocks while Vernon was supervising them. He wasn't doing a very good job of it. Dudley kept destroying Harry's towers but contrary to common sense, Harry laughed at this. He found Dudley's impersonation of Godzilla quite funny. Lily gave James a look and he shrugged.

"Who wants sweets?" Asked Lily in that voice people use when addressing babies. The kids ran up to her, the blocks quickly forgotten. They were arguing to be first.

"Calm down, there's enough for both of you." Lily extended the bag, but she was almost rocked off her feet by a shake of the floor.

"Earthquake!" Screamed Petunia snatching Dudley and covering his head

"What was that?" Asked Vernon from the floor, he hadn't been as quick as the others.

"Lily, take Harry and go! It's him! Go! Run! Petunia, go with her! I'll hold him off." He ran to the entrance, wand in hand.

Lily, who had also lifted Harry in the first shake, grabbed Petunia by the wrist and pulled her upstairs. They got to the nursery and closed the door.

"Where are we going?! Vernon is still downstairs!" Petunia shrieked, she didn't know what was happening but the house appeared to be under attack. Loud crashes and mild explosions could be heard and lights flashing could be seen from underneath the nursery's door. Dudley was screaming bloody murder. Lily Silenced him.

Broom, Lily thought. She couldn't Apparate, not with the Fidelius in place; the floo had been disconnected for it was easily tracked. She needed a broom. But all three of James and her own were downstairs. She peeked to the window to look at the tree; she could climb it down even with Harry but Petunia wouldn't be able.

Alarm!, was her next thought. She new Dumbledore had installed one in the house but they didn't know how it worked so The Marauders had installed a panic button in every room in case of emergency. It had been Remus idea and while they hadn't trusted him completely, they couldn't deny it was a good idea. Lily placed Harry in his crib.

"We are going to die!" Petunia hugged Dudley tighter.

She crawled under the crib were the panic button was located, hidden enough not to be touched accidentally but not exactly easy access. Now, Lily would have preferred it to be just beside the lights switch.

"What are you doing?! We need to get out of here! Now!" Petunia had started to breath in sharp uneven breaths. Lily recognized the first signs of shock.

She stretched her arm a little more, her fingers grasping the button.

"Take deeps breaths Petunia, you can't go into shock, you need to be strong, for Dudley." Said Lily from under the crib and it calmed Petunia a little.

Finally she was able to push the button.

She was going to say 'Help is on the way' but a second shake, made the bedside lamp fall and hit her head knocking her unconscious.

"LILY!" She placed Dudley aside and dropped beside her sister.

Petunia screamed in pure terror when the door opened with a small explosion. She got up as quickly as she fell having miraculously missed all the falling debris. She was faced with what could only be described as a snake-man. His features were disfigured and wrong, only one emotion clear in his red eyes; hate.

Petunia had ended up standing right in front of Harry's crib. She glanced at him, the little boy looked scared but he was not crying; his green eyes were clear.

"Stand aside you silly girl … stand aside now."

People say that when you are face with death you see your whole life flashes in front of your eyes. For Petunia this was true.

She saw herself as a small girl, playing with her toys in a pink bedroom all of her own. She saw herself in pink pyjamas and a pink coat sat in a white hospital chair clutching a stuffed animal to her side. She saw green eyes looking at her. She saw green baby food staining her new yellow dress. She saw green doodles covering the walls of her living room. She saw herself and the green-eyed baby playing in their bedroom. She saw the green-eyed girl grow. She saw her leave. She saw herself in white. She saw herself in a white house that looked pink on the outside. She saw the green girl return, now a woman. She saw her marry and she saw a green-eyed baby again. She saw green, so much green.

Not even a second had passed.

"No, please no, take me, kill me instead-"

The words flew from her mouth, she was not surprised; she knew what the man wanted but she wouldn't give it to him, she couldn't.

"Not them! Please … have mercy … have mercy…"

She pleaded even when she knew it was worthless because it was human nature to plead when hope is gone. She hoped Lily would take good care of Dudley.

The last thing Petunia Dursley née Evans saw before dying was green.

(1)Quote taken directly from HP&TPS
There were other quotes taken and modified to fit the plot.

It's my first try at a Dark!AU so you'll have to be patient

Review please :)