First Supernatural Fic! Rated M for Later Chapters, Possiable Lemon have yet to decide, so Enjoy! Summery:

Erin O'Shea is a Witch who is half Angel, and The Winchester brothers are her Purpose from God, (Much to her Dismay) she must travel across the country trying to prevent the Apocalypse. But the More time she spends with the Brothers, the more they Intrigue her. Magic, Angels, Demon, Guns, Blood, and not to mention Physic connections, causing all kinds of problems! ENJOY!


Prologue

She looked out the window to see flashing red lights, and she flipped the switch on the bottom of the shelf, and the secret room in the basement's alarm system was engaged. Now no one but her would be able to find, or open it, a knock on her door confirmed her suspicions the cops would come. She walked to her door, unlocked it, and opened the door to meet the suspicious eyes of the sheriff.

"Good evening, Miss O'Shea," he said, trying to be civil.

"Good evening, Officer Conner," she said smiling coyly. "But I believe we know each other well enough for first names."

"Miss Erin then," he growled. "Miss Evens has gone missing, and you were the last person to see her."

"So I'm the prime suspect," she said. Officer Connor nodded. "Well, I assure you she's not here, though if you wish you may search my home, though if you wish to I would prefer you had a warrant before you did."

"Fine then I'll come back with one," he said glaring at her.

"You do that," she said with a smirk. She shut the door and locked it. Then she went to her room, and change into her blood stained work clothes. She walked down the stairs into her basement and crossed to a bookshelf, then flipped over a picture hanging on the side of it and tapped in the code. A series of beeps and blips, and the shelf slides to the left. She steps in and it slides shut behind her, she turned to see a girl tied to a chair next to a tray of ominous looking instruments. She walks up to the tray, the girl's blue eyes staring angrily at her. "If you have something to say Miss Sara Evens, please do so," Erin said picking up a large silver knife.

"How could you," she asked. "How could you turn on your own kind, I may be a demon now but I was once a witch like you," she began only to be cut off by the tip of the knife pressing into her throat.

"I am nothing like you," Erin snarled. "My power lies in my blood, yours was in a demon that used you to recruit more cronies," she said dropping the knife back onto the tray, deciding on the holy water first. Erin turns back to the bloody blonde and holds up a syringe filled with clear liquid.

Sara's heart beat quickens up, she can feel her eyes get huge, "So tell me, Erin," she said. The red-headed hunter's violet eyes narrowed. "What made you turn to this?" Sara said with a smirk. Erin pushed the plunger down a bit and a few drops of holy water leaked out and hit Sara on the shoulder. They stung like a Mother. And a hiss of pain escaped from behind her clenched teeth.

"First off," said Erin. "You don't call me that. Second, you really want to know what started all this? Well, I found out on my seventeenth birthday I'm half fucking angel! And I happen to be a witch of a family that's been here for five thousand years. And now I've told you too much so, where can I find the Winchesters?" she said emptying the syringe of holy water into her blood stream. Hearing Sara's unearthly screams, put a small smile on her face.

As Erin stripped off the now freshly stained clothes and threw them in the sink, she thought about her reasons for all the torture. Sara had turned up nothing like usual, and her search for the Winchester brothers continued. She knew their names and what they looked like, and some of their personality traits, but that was all. The biggest reason she was looking for the boys was because Castiel was interested in them. And she needed to find him, so she could figure out how to squeeze every bit of life out of him, in vengeance for abandoning her mother even before she knew she was pregnant. The man may be an Angel of the Lord but he had a few things to learn about family.

Erin pulled on an over sized t-shirt and crawled under the covers. She started reviewing the information she had on Sam and Dean. Sam was tall with dark brown hair, and deep blue eyes, and quite a chip on his shoulder. The younger of the two, he happened to also have demon blood, Sweet and caring and quite handsome, a complete contradiction.

Dean was quite the bad boy, with an even bigger chip on his shoulder. Short brown hair and emerald green eyes he was quite handsome, and very, very, very good with members of the opposite sex. One of his problems, alcohol, His other problem, he was currently in Hell. Though she could tell, somehow, he was important.

Erin closed her eyes and began to fall asleep when, she heard a rustle inside the house. She reached under her pillow for the old antique Colt gun she kept there out of habit. She heard footsteps outside her bedroom door. She aimed the gun at the door, and pulled back the hammer. She heard minute clicking noises coming from the lock, and soon the door swung open to reveal a tall, familiar, male silhouette.

"Drop it!" she said pointing the gun at his head.

"Whoa! Hey it's me Liam!" the figure said putting up his hands.

Liam? she thought. Erin's eyes narrowed, "When did I get my first shotgun?" she asked just to be sure.

"Third grade and I still have the scar on my ass from the first shot you took," he said chuckling.

She got up and pulled the silver knife out from under the mattress and walked up to the man. He had bright red hair like hers, and deep blue eyes, he held out his arm. "Sorry 'bout this," she said making a shallow cut on the outside of his bicep. A thin line of scarlet snaked down his arm.

"Guess this proves I'm me," he said wrapping his long arms around Erin, for a bear hug. She returned it, ecstatic that her older brother was here. He pulled away and looked down at her. "How's the search for elusive Winchester bitches?" he asked sitting on the edge of her bed.

"Going nowhere," she said sighing.

"The demon in the basement?"

"Needs exorcised," she said pulling a map from under the bed. "I'm giving up and scrying."

"Scry for Dean first," he said pulling out an amethyst tied to a string.

"FYI, the man's in Hell," she said skeptically. "That doesn't exactly show up on a map."

"Who knows," he said shrugging. "Just try it."

Erin looked at him like he was crazy, but Liam was known to be right about a few things, so she placed the crystal in the center of the map, and muttered, "Invenire Decanus Wintoniensis." Find Dean Winchester. The crystal swung on its own back and forth across the map until the tip touched down on Pontiac, Illinois.

Holy shit, she thought