Disclaimer: I do not own the Vampire Diaries or Supernatural

~VDS~

Time passed by surprisingly fast for Katherine. The days seemed to meld together into one big blur, quickly becoming weeks, as she settled into a comfortable routine. Katherine would wake up early in the morning and get ready, then she would head downstairs to help make breakfast as Bobby had told her, "If you are going to live here, that means you pull your own weight and contribute." Afterwards, she would tidy up the house a bit, a job which she took upon herself as she hated a messy area. In the afternoon, Katherine and Dean would meet up in the library for what he referred to as her daily 'life-surviving' lessons. He taught her how to create fake birth certificates, school records, driver's licenses, fake badges, and credit card accounts, as well as how to properly manage her money and steal cars.

She could tell that both Dean and Bobby were pleased with the progress she had made in such a short amount of time.

When her afternoon lessons were finished, Katherine was given the rest of the day to herself. Some days, she would head out to the garage to sit with Dean while he worked on and fixed his Impala. Her time with Dean had started out as awkward and quiet, with neither of them saying anything to each other. Eventually though, Katherine began talking; she would tell Dean about concerts she'd been to and the famous people she'd met, everywhere she had travelled, and the things she'd done that didn't involve maiming or killing innocent humans. Dean warmed up to her after she'd given him no choice but to listen to her endless talking, and he started telling Katherine about his own stories and travels.

On other days, she would spend time with Bobby in the library, talking to him and asking questions. She wanted to gain his trust… and it was working. She was now allowed to read some of his books, though she couldn't take them out of the library and there were still certain ones she wasn't allowed to touch. But she was still making progress.

Katherine also made sure to play her role well; she told Bobby about her past. She explained Klaus and the ritual to unlock his hybrid side, how it involved the life of the doppelgänger and would've resulted in her death, leaving her with no other option than to turn herself into a vampire. As she told Bobby about how Klaus had slaughtered her entire family for escaping him, she couldn't help but tear up a little bit; after all, it had been such a long time since she had talked about the death of her family.

She also made sure to let Bobby know that Klaus was still out there, searching for her again, especially now that she was human again and could be used for making hybrids. Katherine was also sure that Bobby had told Dean everything he had learned about her past.

And the good thing about Katherine's past was that it was all true and she wasn't lying.

However, Dean and Bobby were also Hunters, meaning they knew of her reputation in the supernatural world, which was a problem for her. Katherine knew there was no excuse that could justify what she had done in their eyes. So she simply told them everything she had done had been for her own survival.

Knowing that there was little she could do to change Bobby and Dean's values and beliefs, Katherine simply moved onto trying to convince them that she didn't want anything to do with being a vampire again. And seeing as how she had become a vampire to save her own life, Katherine was pretty confident that she would eventually gain Dean and Bobby's full trust.

It also didn't hurt that Dean was obviously attracted to her. Plus, she knew her growing relationship with him was an added bonus.

During those passing days, Katherine didn't see Sam again. There was no more late-night meetings and he didn't come upstairs. Katherine almost wanted to ask Bobby about it, but she was worried she might stir up trouble if she did.

There was also times when Katherine would walk into a room to catch Dean and Bobby whispering to one another in agitated or frustrated tones. She was able to catch snippets of their conversations – there was mentions of someone named 'Castiel' and something about Sam's health. But once Dean and Bobby noticed Katherine, they would go silent right away and stop talking. After that, the two of them made sure to be more careful so Katherine wouldn't overhear anymore conversations, much to her irritation.

All in all, everything seemed to be going smoothly for Katherine and she was sure she would be able to leave the Singer Salvage Yard eventually.

~VDS~

Present day…

When Katherine walked into the kitchen, she was surprised to see Dean, Bobby, and Sam all standing in front of the TV in the corner of the room. The channel was on CBA News and the caption on the screen declared Breaking News.

"The sudden deaths of some 200 religious leaders are currently under investigation. The Vatican has yet to issue a statement, but some are already calling this an act of God."

The camera panned away, turning to a woman standing in front of a church. She was being interviewed.

"We all saw him. No beard, no robe. He was young...and...and sexy. He had a raincoat."

Dean shook his head, turned the TV off, and stormed away. Katherine stood there, staring at the blank TV screen while both Bobby and Sam didn't say anything.

"W-what… was that?" Katherine finally broke the silence, turning to look at the two men next to her.

"A problem we need to deal with." Bobby replied as he walked past Katherine into the library.

Katherine turned on her heel and followed Bobby. "Hey, I am not some idiot!" She exclaimed. "I know you guys are all Hunters. I used to be a vampire, I know about the supernatural world, remember? You can't keep ignoring me and pretending like I don't, because that isn't the case!"

"We have an angel-turned-God on our hands murdering people." Bobby told Katherine bluntly as he sat down in his chair.

Katherine furrowed her brows in confusion. "What?"

"Bobby," Sam warned, sitting down on the couch. "Are you sure you should be telling her this?"

Bobby sighed. "I don't see why not. She's living here, she knows about us, and she used to be part of the supernatural world."

"I still am." Katherine put in. "I am a Doppelgänger with 538 years' worth of enemies and an Original Hybrid who wants to torture me for fun then rip my head off. I will always be part of the supernatural world, whether I want to or not." She crossed her arms. "And especially now that I am human, I might as well step up and start learning everything I can."

Hearing this, Sam nodded his head and explained, "Long story turned short: Castiel is – was – our friend. Especially Dean's. He was an angel and he would always help us out… but he betrayed us and joined up with the King of Hell –"

"Wait," Katherine cut Sam off with a questioning look. "King of Hell?"

"The top demon running hell." Sam answered. "His name is Crowley."

Katherine nodded her head and motioned for Sam to continue.

"As I was saying," Sam went on. "Castiel joined Crowley, and absorbed all these souls from Purgatory – a place where monsters go once they've been killed – and became the new God."

"Okay…" Katherine said as she took everything in, beginning to pace back and forth.

Sam followed her every movement. "Are you alright?"

"I'm fine, now be quiet." Katherine told him.

Sam glanced at Bobby, but he simply shrugged. Neither of them spoke as Katherine continued to pace back and forth. Finally, after a few more minutes, she stopped and looked up. "This Castiel – technically speaking – isn't the real God, right?"

"I guess…" Sam said.

"Then there is probably a way to take him down." Katherine pointed out. "You said he became God when he absorbed all these souls… so find a way to take those souls from him. Or look for something which is stronger than him… or someone who can even the playing field with him. After all, everything has some sort of weakness – you just need to find his."

Bobby looked at Sam. "We better talk to Dean…"

~VDS~

"What is this going to do?" Katherine asked. She was standing just behind Sam, watching him spray-paint sigils onto the floor within a circle.

Sam straightened up when he was finished. "It is a Devil's Trap and it can be used to trap demons."

"What demon are you hoping to capture?"

"The good old King of Hell." Dean answered Katherine's question as he came down the staircase into the basement. He walked over to a table setup with a bowel and a bunch of different herbs. "Who even let you in on all of this?"

"I already knew you were Hunters." Katherine reminded him. "It was then only a matter of asking what was going on, since you guys kept hiding everything from me."

"With good reason." Dean muttered.

Before Katherine could reply, Bobby came walking down the staircase holding seven candles. He headed over to the table where Dean was and set the candles down in a specific order, used a piece of chalk to draw lines on the table connecting the candles, and then lit them. As he did this, Dean mixed the herbs into the bowel before picking up a knife – slicing his palm open – and letting his blood drip onto the herbs.

"We are good to go." Dean said, setting aside the knife and wrapping his hand up.

Sam stepped away from the Devil's Trap, grabbing Katherine's arm and pulling her back as well.

"Et ad congregandum… Eos coram me." Dean recited a Latin incantation perfectly. When he was done, he lit a match and threw it into the bowel. Flames burst up out of the bowel and a man appeared in the Devil's Trap holding a bottle of liquor in one hand and a glass cup in the other.

This is Crowley… the King of Hell, Katherine thought as she looked him over. He was not on the tall side, being only four inches taller than Katherine, but he was handsome. He had dark brown hair with intelligent brown eyes that had a hint of green to them. He was clean-shaven and wore a dark, well-tailored suit

"No," he groaned as he turned around to look at them. "No! NO! Come on!"

"Don't act so surprised." Bobby told him.

Crowley was about to reply, but his gaze slid past Bobby and landed on Katherine. "Well, well, well," he said. "Who is this beautiful woman?"

Katherine gave him a sultry smile. "Katherine Pierce."

"I am Crowley… the King of Hell." He introduced himself. "You certainly are a lovely little thing, Darling."

"Why, thank you." Katherine replied, brushing a stay brown curl away from her face.

Dean gagged. "Enough with the flirting. We need to talk."

"My new boss is going to kill me if I talk to you lads." Crowley stated, finally looking away from Katherine.

"Well, you're lucky we're not stabbing you in your scuzzy face, you little piece…"

"Dean." Katherine interjected smoothly. "That is not how you convince someone to help you."

Dean crossed his arms. "What do you know about…?" But he trailed off once he realized what he was saying.

"That's what I thought." Katherine muttered.

"Whoa, wait! Back up." Sam spoke up. "What do you mean your new boss?"

"Castiel, you giraffe."

Before she could stop herself, Katherine laughed. Bobby, Dean, and Sam all turned to look at her with the same expression which practically said, really? Crowley, on the other hand, looked amused.

"What can I say, it was funny." Katherine mumbled.

Shaking his head, Dean looked back over at Crowley and said, "Castiel is your boss?"

"He's everybody's boss." Crowley snapped. "What do you think he's going to do if he finds out we've been conspiring?" He paused for a moment as he looked between Bobby, Sam, Dean and Katherine, then added, "You do want to conspire, don't you?"

"No." Bobby deadpanned. "We want you to just stand there and look pretty."

"That works for me." Katherine winked at Crowley.

Crowley smirked at Katherine. "I am listening."

"We need a spell," Dean stated, "to bind death."

"Bind?" Crowley gained a look of disbelief on his face. "Enslave Death? You having a laugh?"

Dean's expression remained serious. "Lucifer did it."

"That's Lucifer."

"A spell's a spell." Sam said.

"You really believe you can handle that kind of horsepower?" Crowley looked them all over, his voice rising with each word. "You're delusional!"

"Death is the only player on the board left that has the kind of juice to take Cas." Dean explained.

Crowley shook his head. "Whose idiotic plan was this?" He raised an eyebrow. "Squirrel or Moose? Which one?"

"I put the plan out there, Dean figured out who we would need." Katherine announced.

"Ballsy. I like that." Crowley told her. "But this plan won't work."

Bobby sighed. "Look! Do you really want Cas running the universe?"

Crowley looked down and poured himself a drink. "Fine."

~VDS~

The Next Day…

Katherine was walking down the staircase when she noticed a white envelope on the floor by the front door. She walked over and picked it up, opening it to see what was inside. She pulled out an old, delicate-looking sheet of paper with ancient writing on it. Attached to the paper was a sticky-note reading:

Here is the spell, Darlings. Enjoy and have fun. And make sure you don't get yourselves killed. Especially you, beautiful.

Sincerely, the King of Hell, Crowley

Laughing, Katherine shoved the sticky-note into the pocket of her leather jacket and walked down the hallway to the library. "Bobby," she called out. "Crowley delivered the spell."

The spell was yanked out of her hand by Dean the moment she entered the library. Bobby and Sam crowded around Dean, and the three Hunters studied the spell.

"Well," Dean said. "Who feels like hogtying death tonight?"

"Old age is over-rated anyhow." Bobby shrugged.

Sam rolled his eyes. "It looks like we have most of the things on that list, expect for…" He peered at the list again. "An act of God crystallized forever."

"What the hell is that supposed to mean?" Dean said.

Katherine bit her lip. "Do you think that could mean an actual crystal?"

"Possibly." Bobby said as he headed over to his desk and sat down. He opened up his laptop and began typing away. After nearly an hour, he looked up and said, "It looks like we're gonna be needing a fulgurite."

Dean looked confused. "What?"

"Fulgurite, also known as petrified lightening. They are only created when lightening hits sand at the right angle and spot, causing it to crystallize and create a perfect shape of itself." Katherine explained.

Dean raised an eyebrow at Katherine.

"What." She said defensively. "I've been alive for over five hundred years."

"Enough, ya idjits!" Bobby snapped at them. "I found records of an auction. Winning bidder lives about nine hours from here."

Dean clasped his hands together. "We better hit the road then."

As Sam and Bobby rose to their feet, Katherine declared, "I am coming with you guys!"

"No," Dean said right away, shaking his head in refusal. "You are not coming with us."

Katherine glared at him. "Why not?"

"Because you can't!"

"That's not an answer!"

"Yes it is, Princess. There'll be no more discussion about this. You. Are not. Coming."

Sam cleared his throat causing Dean and Katherine to look at him. "It would probably be best if we brought her with us, Dean." He reasoned. "We can't leave her here alone."

"Then Bobby can stay here with her. Sammy, you and I will go get the crystal and bring it back here." Dean said. "Princess will just be in the way if she comes with us."

"I know how to take care of my–" Katherine started.

"You did… when you were a vampire." Dean cut her off. "You wouldn't be able to defend yourself if someone attacked you right now. You'd be helpless and then I – we'd – be distracted because we have to save you."

"Then teach me how to fight… how to be a Hunter!" Katherine shot back, stepping forward into Dean's personal space.

"I will!" Dean shouted, his green eyes blazing. "But for right now, you need to stay here and away from the danger, okay?" His anger faded from his voice with each word and he reached forward, pushing a brown curl out of Katherine's face, tucking it behind her ear.

Katherine sighed. "Fine," she agreed reluctantly. "I'll stay here with Bobby."

"I'm glad this is finally settled." Dean said, stepping away from Katherine. He glanced at his brother. "C'mon, Sammy, let's go."

Katherine watched as Dean and Sam took down the address of the winning bidders and left the library. She wanted to go with them, to prove that she wasn't weak, but she also knew that she wouldn't be able to change Dean's mind. He was clearly convinced that she shouldn't be going with them.

Bobby rested a hand on Katherine's shoulder. "Don't take it too hard, Katherine." He told her. "Dean was just worried about ya, which only means that he cares about ya."

Katherine bit her lip. She knew none of this could last… this comfortable lifestyle she had going on with Bobby and Dean and now Sam. She would leave them soon, so she could try and find a way to become a vampire again. Clenching her fists, she muttered. "I know…"

~VDS~

That's chapter six! The next chapter will have Death and he will have a message for Katherine. Katherine will stay with the Winchester for a bit longer, learning how to be a Hunter, but then she'll be leaving and there will be another time-skip probably.

Just to let you all know, I had no intentions for this story to take place during season 7 or much of season 8. The only reason I started it with season 7 was because it matched up with the Vampire Diaries in terms of timeline for dates, and I liked that.