Y/n never thought she would do anything big, she lived in Columbus, Ohio and worked at a bank, but she never would have expected that she was a part of something huge.

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She sat at her desk, typing away at her computer and talking with her manager, Jackson, about how people are all rushing to get their money into the bank. "I'm telling you Jack-a-boy," she called him by his nickname,"I can't explain it, we just received a huge influx of cash from an anonymous account." She stopped for a second and cringed as a rancid smell filled her nose. Something she knew, but couldn't put her finger on. The thirty year old tried remembering as much as possible from her high school Chemistry class. "Sulfur?" She whispered to herself.

"Sulfur? What are you going on about? Y/n!"

She quickly returned her attention to her manager, brushing off the weird smell. "Sorry Jackson, I got distracted." She pushed a strand of h/c hair behind her ear, sighing and continuing on with her work.

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It was 5:37, finally time for some R&R. Y/n was eating f/f and drinking f/d when she heard a knock on her door, frowning she got up from her comfy couch and opened the door; before her stood two men dressed sharply in suits. "Miss Y/n L/n?" One of the men asked. 

He was short compared to his partner, but still taller than her. He wore a navy blue suit and matching tie with a white undershirt, and had dirty blonde hair. His partner had about shoulder length dark brown hair and side burns, he wore a black suit and tie with a white undershirt. His head nearly scraped the door frame, which made her feel like a leprechaun because of his height. She was only five foot nine and they looked about six foot maybe more.

She quickly swallowed the food she was chewing. "Yes I'm Y/n. What can I do for you?" They pulled out leather badges; they were with the FBI. "I'm FBI Special Agent Smith," the tall one said, "and this is special agent Paige." He gestured to his partner. "Oh!" She smoothed out her shirt, feeling a tad bit embarrassed by her appearance. She was wearing a baggy white tee shirt and black leggings, her comfortable clothes. Moving away from the door, she asked the agents inside.

"I'm sorry about the mess, I've been a bit busy today." She moved her utensils to the counter of her kitchen, glancing briefly at this morning's newspaper, before turning back to the agents. "Would you like something to drink agents?" Agent Paige nodded with a warm smile. "Would you happen to have any beer?" She hummed a yes and gestured to the couch. 

"Where are my manners? Please, take a seat." Y/n walked to the fridge, grabbed the beers, and turned to go to the living room. She overheard the agents chattering quietly with each other. "Do you think she has some information to do with the deaths?" Agent Smith said asked his partner. "I don't know man, she seems normal enough to me." Stated Agent Paige. Normal? She thought, that's when she walked in, smiling and carrying the beers.

"One for you," she handed Paige one, "one for you," she handed Smith one, "and f/d for me."

She sat down on the couch, across from Smith and Paige. She stared at them and they stared back. This went on for a while until Agent Paige awkwardly broke the silence.

 "Um... are you okay, Miss L/n?" He looked at his partner, who looked at him with raised eyebrows. 

"I'm sorry, you guys just look really familiar." She stated. "Have we met before?"

 Paige looked at her, studying her for a quiet minute before answering. "No I don't think so. Can we get back to the conversation? We have some questions for you, about your neighbor's death." She grabbed her cup off the table between them and took a sip of f/d. "I'm all ears."

Smith sighed. "Was there anything different about Patrick on the days leading to his death? Like acting weird, or off character?" She bounced her leg, trying to remember. "Actually," she started tapping her finger to her bottom lip, "yeah! He was acting super weird last week, seemed a little on edge about stuff. Like he didn't want to have any accidents happen ya' know?" Paige nodded, and continued with the questioning. "Any strange anomalies like lights flickering or unusual smells similar to rotten eggs or... sulfur?" 

Her eyes instantly widened. "What?" 

Paige raised his hands in self defense. "Just a routine question." She paused before nodding slowly. "No it's just, I smelled sulfur earlier at work. It seemed to be following me around, but it went away about ten minutes before you guys got here."

They glanced to each other and stood up. "I think that's all we have for now, thank you for your time, Miss L/n." 

She followed suit, standing and shaking their hands. "Please, call me Y/n." 

"Of course." Agent Smith handed her a business card. "Call if you can think of anything else." Y/n nodded her head. "Will do agents." They walked to the door, "Have a good day, Y/n." The agents left, closing the door behind them. As they walked further away from the door Dean looked back with a smug smile.

"Dude, she is hot." Dean chuckled, making his younger brother slap his shoulder. "Sam, what the hell?" Dean complained. "You need to focus Dean. She said Patrick was acting different, that she smelled sulfur wherever she went, and that it left when we came. That's a demon Dean, we need to figure out why it's stalking her before it kills her. Call Cas."

Dean grumbled as they get to the Impala, he closed his eyes and prayed to Cas. "O Castiel, we have a situation. We're in Columbus, Ohio and there's a demon following some girl, Y/n L- " he got cut off by the flapping of wings, and a blue eyed, brown haired angel in a trench coat appearing before them. "Hello Dean." Said Castiel in a gruff voice. Dean raised a questionable eyebrow at Cas. "You sure got here quick. Why is this demon following her around? Is she important?" Castiel nodded. "More important than you think." Sam sighed "Why is she so special?" The celestial being looked at the boys.

"Because she's a prophet."

He said it like it was supposed to mean something to the two. "A what?" Dean dumbly asked the trench coated angel, who was currently looking at Y/n's house. "A prophet of the Lord. She will be able to see the past, present, and future of the Winchester brothers." Castiel sighed deeply, it had been a long time since he'd even seen a prophet. He had the whole list of past, present, and future prophets burned into his memory, but he'd never seen one in person before. "Is that why she thought we were familiar?" Sam asked, only getting a sharp nod in reply.

 "Well—" Dean clapped his hands suddenly, "—I don't know about you guys but," he opened the door to his Impala and stepped into the driver's seat. "I could eat." The other Winchester walked around to the other side of the Impala, an climbed in the passenger side. "But," Cas protested, "who will watch over the prophet?" Dean ushered the angel over and Castiel bent down to Dean's level.

"You will buddy." Dean used a hand to pat the angel's shoulder. The confused man tilted his head.

"What?" 

Dean chucked. "Yeah Cas, go Invisible Girl and keep an eye on her." He looked up at the angel, who'd already disappeared.