A/N: Hello all! I'm endless-winters127. Let's get to the story.

Disclaimer: I do not own Supernatural.

Chapter 1: Long-lost

Sam and Dean were creeping through the old, abandoned building with their guns raised. They were searching for the demon that another hunter had told them about.

"Sammy, are you sure this is the right place?" Dean whispered.

"Yeah, I'm positive," said Sam. Suddenly, Dean heard a light shuffle and then saw a faint shadow of an arm in the doorway. He didn't hesitate to fire at the arm. Once he did, he heard a voice.

"Jesus!" Came the voice. Definitely female. Could it be the demon?

That girl Dean had shot stepped out of the doorway like a shadow. She was dressed in dark clothing and had nearly pitch black hair that had been a bit tousled up. She was young. Couldn't have been more than seventeen years old. She was cradling her injured arm and looked at Sam and Dean accusingly.

"Work on your aim, man. You barely grazed me. But son of a bitch that hurt." Sam and Dean exchanged a look.

"Uh...who are you?" Asked Sam.

"And what are you doing here? This ain't no place for kids," said Dean.

"Yeah, well who the hell are you?" The girl asked. She then took out her own gun from her jacket with her good arm and aimed it at them. The guys looked shocked that a girl as young as she was had a gun and had the guts to threaten them with it. And by the looks of it, it seemed like she wasn't afraid to even pull the trigger.

Dean was the first to lower his weapon. "I'm Dean. And this is my brother-"

"Sam." She interrupted. "Ive heard a lot about you boys. Are you guys here for that demon bitch?" She asked.

"How do we know its not you?" Sam said skeptically. At the sound of it, the girl dropped her gun and spread her good arm to the side, still careful of her injured arm.

"Go ahead. Throw some holy water at me. Hell, you can draw a devils trap around me." She said bluntly. So Dean took his bottle of holy water and threw a few drops at her. Not even a sizzle. The boys both lowered their weapons.

"Alright, squirt. What's your name and what the hell are you doing in a place like this," Dean questioned.

"Don't call me squirt, Dean-o. I'm here the same reason you boys are. To catch the demon." Dean scoffed at this.

"And what makes you think you can do that? What are you? Twelve?"

"I'm seventeen, dumbass. And I'm just as qualified to do this as you are."

"Listen, I think it would be best if you just got out of here." Sam said.

"Like hell! I've been tracking this son of a bitch for over a week now and I'm not just gonna hand over this one to you guys just cause I'm a little younger than you guys. Besides. Hunting runs in the family."

"Family?" Dean asked. "Look kid, I dunno what kinda crap you're up to but-"

"Oh, my god." She said. "You guys don't know."

Sam and Dean looked at each other, confused.

"My name is Madeline. I'm your sister."

When Madeline claimed to be their sister, Sam and Dean immediately decided to hunt down the demon later and sit down at the nearest bar and try to talk to Madeline.

"What do you mean, you're our sister?" Sam asked. The boys were sitting on one end of the booth while Madeline was lounging in the other end of the booth.

"You know how when you guys were kids, your dad would leave for hunting trips? Sometimes for days at a time?" Sam and Dean nodded.

"Your dad met my mom. You two know about the birds and the bees, right?"

"Alright squirt just cut to the chase," said Dean.

Madeline leaned in close, with a deadly look in her eyes.

"Don't call me squirt, Dean-o."

"As long as you won't call me Dean-o, then we're good."

Madeline leaned back and continued.

"Long story short, my mom was a hunter, met your dad and he got her pregnant. So I'm your half-sister really. And on the occasional hunting trips, your dad would make a little detour and come to visit me when my mom wasn't around. He stopped visiting when I was six. And I started going hunting when I was seven. Killed my first demon when I was six and a half when it broke into my house. My mom taught me everything I know."

As Sam looked closer at Madeline, he could see that she had the brothers same green eyes. She was actually quite pretty. She probably had gotten her beauty from her mother. Definitely not their father. All the better for her.

"When I found out that he died not too long ago, I decided to come and find you two." Madeline said, taking a sip of her drink.

"Can I get you anything do drink, sweetheart?" Asked the waiter.

"I'll have a scotch," she said without batting an eyelash.

"Can I see some ID?" She flipped out her wallet to reveal her fake ID. The waiter approved it and left.

"Must be some helluva I.D. to trick that guy," said Dean. "Where'd you get it?"

"I made it," Madeline said.

"You made that?" Sam asked, disbelieving.

"What you think I'm gonna trust some idiot drug addict with knuckle tattoos do it for me when I know I can do better?"

The boys seemed to accept this.

"Madeline, does your mom know where you are?" Sam asked.

"Nope." She took a quick swig of her scotch and stood up.

"Now are you dumbasses gonna drive me to the hospital or what?"

"Why?" Dean asked.

"Um maybe to get the bullet hole in my arm fixed, dipwad?"

"Oh, damn. Right, sorry about that. C'mon lets go."

After Madeline had gotten her arm stitched up, Sam and Dean took her back to the motel where they were currently staying in the outskirts of Minneapolis. Sam offered his bed up to her, saying that he would simply sleep on the ground.

"Uh, I wanted to thank you guys for not ditching me. If any other guy found out they had a kid sister, they would take off running for high heaven. But you guys didn't. So...thanks." And she headed off to the bathroom where moments later, the boys heard the shower running.

"Dude what are we gonna do about this. I actually was going to run for the high heavens." Said Dean.

"Dean, what do you expect us to do? She came to find us. And she's our sister. We can't just ditch her. She could get herself killed out here."

"She seems to have been doing a pretty good job of not getting herself killed if you ask me, Sam. Are we just gonna let her tag along with us? This ain't no field trip. She can't go crying back to mommy when it's over. What we do is real here."

"You think I don't know that, Dean? Look, whether we like it or not, we have a sister now and were just gonna have to deal with it." Sam said firmly.

A few minutes later, Madeline exited the bathroom, wearing shorts and a tshirt that read 'I wish you were a piñata' across the front. Without a word, she crawled under the covers of the twin bed and went to sleep.

"...I think she heard us," said Dean.

"Brilliant," said Madeline.

"Dean. Dean. DEAN!" Dean sat up straight in his bed. Light was streaming through the windows of the motel room. Sam was standing over him with a panicked look on his face.

"Madeline's gone." Dean looked at the bed next to his. Sure enough, the blankets were a mess and the bed was empty.

Dean lay back down and shut his eyes.

"Good riddance," he said.

"Dean, are you seriously telling me that you don't care that she's missing? She could be dead or taken by God knows what for all we know."

"Can't here you. Sleeping," Dean mumbled.

"Dean!" Sam shouted. He ripped the blankets off the bed.

"Hey!" Dean yelled.

"When will you get this through your thick-ass skull, Dean? This is our sister and we're responsible for her now! Now get up. Lets go."

"Where."

"We're gonna go look for Madeline. Our sister," Sam said.

"Ugh. Fine," Dean said as he got up lazily.

It wasn't a very long search. Not long after Sam and Dean stepped out the door, they found Madeline walking towards them in the parking lot. She had a long, bleeding scratch running up the side of her face.

"Hey!" Sam shouted, catching up to her. "Where the hell were you?"

"Don't get your panties in a twist. I was just out getting coffee," Madeline said.

"Awesome," Dean said as he took one of the cups from the carrying crate. "I like you better already," he said.

"Don't worry, Sam I got one for you too."

"Nice try. What happened to your face?" Sam asked, reaching out to take a closer look. Madeline swerved her head out of Sam's reach.

"Okay, so I got into a little fight. Who cares?"

"With what?" Sam glared intensely at her, clearly trying to intimidate her. Which wasn't that difficult since he towered over her by nearly a foot.

Boy was he wrong. Madeline glared right back at him.

"You went after the demon," Sam said in realization.

"Maybe," she retorted.

"Dammit, Madeline! You went after the damn thing and you got hurt!"

"Yeah well at least I killed the thing!" She shouted right back at Sam.

"Woah woah woah wait a minute," said Dean. "You killed that demon?"

"Yep," Madeline took a sip of her coffee.

"When?" Dean asked.

"I dunno. Maybe an hour ago?"

"And you went out for coffee afterwards?" Sam asked.

"You can thank me later for that by the way."

"How'd you kill it anyways?" Dean asked. Madeline flipped a long knife out of her jean jacket and smirked.

"Is that mine?" Dean asked.

"Your car isn't that hard to break in to."

"YOU BROKE INTO MY BABY?!" Dean screamed. He snatched back his knife and ran to the Impala where he popped the trunk.

"Oh, God I'm so sorry, baby. I'll never let her touch you again." Dean opened up the stash of weapons.

"Gimme the gun, Madeline," Dean said. Madeline took the gun out of her back pocket and handed it over.

"By the way, I picked up the paper this morning," she said as she handed the paper to Sam. "Six people are dead in Iowa. The hands, eyes and ears were missing from all the bodies. Should we go check it out?" Madeline suggested.

"And what makes you think that you're coming with us?" Dean said.

"Hey, I'm just as good of a hunter as you are and whatever it is, we could take it down, the three of us, in no time. Not to mention the fact that I'm your sister."

"Mad-"

"Look. I don't have anywhere else to go right now. Plus, you could use my help."

Sam and Dean exchanged a look. They were both wondering whether she was right. She was their sister. But could she really help them?

Sam nodded at Dean.

"Alright," Dean said. "I just gotta get some gas first." Dean reached for his keys in his pocket.

"Madeline," he said.

"Yeah?"

"Do you have my keys?" Madeline dangled the car keys in front of Dean's face before he grabbed them and took off.

AND THE STORY BEGIIIIIINS =) I'm very excited to be starting this new story as I loooooove Supernatural. I'm sure anyone who is reading this also does. Also, if you like Maximum Ride, I have two Max Ride fanfics on my page. I apologize for the suckiness of my profile as it is still currently under construction.

Review =)