AN: This is supposed to be ElijahxOC as I am no fan to triangle love, but when they killed Kol I decided I should write something that has him. I mourned for the handsome Original for days. I knew he would die but his death was too cruel for me to watch. Until we get to Kol, enjoy ElijahxOC.

Disclaimer: I own nothing but Vanessa and Cassandra/Cassidy

AN: Feb 1/2014 - I edited this chapter a little bit and added a scene of Cassandra saving our beloved Katerina.

Chapter 1: Pilot

May 23, 2009

"There's my sister!" I chirped as Elena walked into the kitchen. She too, was wearing the cheerleading outfits but her hair was tied up. As everyone in Mystic Falls had known, we were fraternal twins. The only thing that really made me doubt our blood relation was our appearance. While Elena did look like Mom, I looked nothing like her or Dad.

Elena and I were always mistaken as strangers at first, one will hardly believe that we were twins. Her olive tone skin contradicted my ivory skin. She had brown eyes and I had blue eyes. She had straight brown hair while I wore my golden hair in curls. At least, our facial features were the same, I had said. Our doe like eyes, button nose, and pouty lips. No matter what our appearances were, we were twins. I could feel her and she could feel me. We were inseparable forever and only death could separate us.

"Nessie," Elena said, grinning at the nickname she knew I hated more than anything. I slapped her arm playfully and she laughed.

"Tie your hair please, I don't want any hair in the food," Jenna said and I stuck my tongue at her as her back faced me. I pulled my golden locks into a high ponytail and looked at Elena.

"Where's our baby brother?" I asked and thanked Jenna who handed me a mug of hot chocolate.

"He locked himself in the bathroom again. Does he think we don't know what he's doing in there?" Elena asked and Jenna and I chuckled.

"He's fourteen. They don't think," Jenna told to which I nodded.

"At least he's growing up," I added with a smirk and Elena made a disgusted face. She grabbed the coffee pot but Jenna was quick to take it back.

"Hey, you'll get me in trouble," she told and I smirked.

"That's the point-ah!" I pouted as I rubbed the spot that Jenna had smacked me.

"Good morning," Mom said, a big smile playing at her lips. My own lips curved into a smile instantly, and I placed the mug down.

"Morning, Mom," Elena said, kissing her cheek.

"Morning," I said and held out my cheek so she would kiss it.

"Morning, sweetheart," Mom said and I smiled as I kissed her cheek.

It was a perfect day with a perfect family. I'd never guess that it was the last day of our happiness.

"But it was your fault, 'Lena. You string him all along the way," I said when she told me about Matt. "If you're no longer interested just tell him," I said, finding it absurd that she didn't like Matt but dearest sister can't bear to speak the truth.

"I didn't mean to," Elena said with a sigh. She did seem regret about it, but she didn't want to do anything about it. She would just whine and hoped others would do it for her. This was where our personalities differed greatly from each other.

"But you still did," I countered smartly. "And here we are, going back to the 'family night'," I quoted the words, glaring playfully at Elena.

"You're always blaming me," Elena said with a pout and I shrugged.

"Couldn't help it," I said and opened the door, entering the backseat. I didn't like troubling our parents, I was more independent than Elena ever was. "Who were you talking to just now?" I asked her as I remembered the raven haired man talking to Elena. He didn't seem like he was in high school.

"What man?" she asked, confused and I rolled my eyes.

"Guess you don't want him to be mine then," I teased and she still looked confused. Since when did Elena become such a good actress? I wondered as I looked out of the window.

"Come on, girls. Stop fighting," Dad interjected.

"We were not fighting!" Elena and I chorused, and looked at each other before going into a laughing fit. It was always funny whenever we did that, it was something special, something that showed that we were connected.

"Vanessa! Nessa! Wake up" Elena shook my body and I gasped. We were sinking. No, no, no! I had blackened out due to the shock. Everything was so sudden…

"We're gonna be okay, I promise," Dad told us but I didn't believe him. I couldn't. We were not going to be fine. He tried to break the window but to no avail.

"Dad," Elena called and he turned around, shaking his head. There was no way out and it had come to an end. My life would be over in just a matter of time. There was still so much for me to do…so much for me to learn. And everything would end very soon. Elena took a hold of my hand and I looked at her, my other half. I tightened my grip on her hand and we waited for our life to be taken.

Then there was hope. A man was swimming toward us, and he knocked on the window. I saw Dad pointed to the back, asking the man to save his daughters first. He was sacrificing himself. My heart dropped at that thought, if I survive this how will I ever live with the guilt? The man complied and opened the door with ease, staring at Elena in shock. His eyes moved to me, the surprised look was still on his face. He shook his head as if to clear his mind before pulling Elena towards him. He grabbed my arm and I mustered every strength that I had left to swim. It didn't take a fool to see that his strength was wavering. I could see the surface, but it seemed so far.

Knowing it was very selfish of me to choose death instead of continue living, I shrugged my arm off him and gave him a nod. He watched me grimly before nodding back, and swam to the surface without me. My lungs were burning, and I had to open my mouth. The water entering my mouth and my lungs, my body became heavier and I felt weak. My heads were pounding as I fought to stay alive. I was sinking, to the bottom of the lake and it was almost comforting when I had finally stopped struggling.

They said before you die, you saw your life in flashback.

But I didn't.

I saw myself with the most gorgeous dress that I knew Caroline would die for - prom night. I saw myself standing on the stage with red robe and graduation cap - my graduation. I saw myself traveling all around the world - Paris, Rome, Tokyo, places that I hadn't been before. I saw myself with adorable kids, blue eyes and dark haired, and dark eyes with golden hair like mine. I saw our family at Thanksgiving dinner, all grown up and hints of grey hair on our parents' heads.

The future.

Things that I wouldn't be able to do.

I gasped at the painful feeling of leaving the world, and water entered my mouth. I choked on it, and swung my arms and kicked the water with little energy. I had to live.

Then a hand grabbed my upper arm, and brought me up to the surface with ease. My savior forced something into my mouth and I gulped the liquid down, needing the air to breathe. My eyes fluttered opened, and I made out a woman with dark, curly brown hair with my blurred vision. I felt myself being carried and I felt very, very weak. I wondered if she was an angel sent to me to save me or an angel welcoming me to Death.

Indeed, I was right. She was both.

Katherine effortlessly carried the girl to the house that she was staying in Mystic Falls. The Salvatores were back, and she couldn't let one of them see her. At least, not yet. It was a huge risk when she dove into the water. She was merely following Stefan when she saw Vanessa. She looked just like her twin sister, Cassandra Petrova. Katherine would have been deceived that the girl that was lying before her was Cassandra. Nevertheless, the girl's beating, human heart made it clear that she was neither Cassandra Petrova nor Cassidy Pierce, but the doppelganger. That means, her own doppelganger was in Mystic Falls.

"If words reach Klaus, he would come here instantly. It's not safe for me to be here, but Stefan…" she muttered to herself, trying to think of a plan and sighed. She was more than tired. She had run for over five centuries now. She had to leave Mystic Falls, and that meant, she had to leave Stefan as well. Katherine turned to the girl and felt her heart clenched. Cassandra was caught and murdered by Klaus, and Katherine was saved as everyone thought she died in the church. Katherine knew it was selfish of her, she knew it wasn't the right thing to do. But Katherine was always the selfish one, and this blonde doppelganger, can be the key to save her life.

So Katherine carefully walked towards the girl and cupped her face. She looked exactly like Cassandra. Beautifully trimmed dark eyebrows, thick lashes, button nose and full lips. Even her blonde hair was the same color as Cassandra's. Katherine missed her sister so much, more than her fear for Klaus. And she was given a chance to have it back. And she might as well get her freedom back while she was at it.

Killing two birds with a stone, Katherine thought. With a determined face, Katherine snapped the poor human girl's neck without a slight mercy. The girl's beating human heart stopped instantly.

Vanessa Gilbert was dead.

I gasped for air when I woke up, feeling alive. Last I checked, I was dying. We were drowning. A man saved us, but he had to let go of me. And a woman saved me.

Then I saw Elena standing in front of me.

She looked pretty alive too.

"Elena?" I asked, confused. "Are we dead?" I asked and she laughed softly. I took in her appearance and frowned. Since when...Elena dressed like that?

"Do you feel dead?" she asked and handed me a cup of hot chocolate. I looked at her warily. This wasn't my sister.

"You're not Elena," I stated with confusion yet firmly. Elena's lips formed a smirk and she offered me the drink again. I took the mug carefully, and examined the drink.

"I didn't put anything weird in it. I was the one who saved you," she told me and I relaxed a little. I took a sip, and sighed as the warmth spread inside my body. I took another sip, before meeting the girl's familiar brown eyes.

"Who are you?" I asked. My head was pounding with so many questions, so I decided to take it step by step.

"My name is Katherine Pierce, your sister's doppelganger," she said, and I looked at her, puzzled. I'd heard of doppelgangers. There were practically a double living person and brought bad luck. Well, I did almost die just now...

"What's your name?" Katherine asked. Her dark brown eyes met my blue eyes. She really looked like Elena. Like the exact copy of my twin.

"I'm Vanessa. Vanessa Gilbert," I told and looked around. No sign of Elena. "What about Elena?" I asked, trying to hide my panic. Even at the thought of my twin dying hurt me.

"Your sister's alive," Katherine said and I breathed a sigh of relief. "My friend saved her," she said.

"That man?"

"Stefan," Katherine told me and I nodded.

"Where...is she?" i asked. "Where am I?" I asked.

"I believe your sister is in the hospital. You however...hmm, how do I put this delicately?" she asked and I narrowed my eyes at her, feeling annoyed at the playfulness in her voice. This wasn't really the time for her to joke around.

"What is it?" I snapped and she looked at me, a grin on her face.

"Let's say they didn't find your body," she told me and I looked at her.

"I'm here, take me back to my family!" I demanded and Katherine chuckled. I gasped when I was pushed against the wall at the sudden force. My eyes widened at Katherine's face; her eyes were red and there were dark veins under her eyes.

"Can you guess what I am? Or did your father never tell you?" she asked me, and I saw her fangs.

"Vampires," I said breathlessly and Katherine smiled, her vampire face disappearing. She took a step back, telling me indirectly that she wasn't going to hurt me. Not yet anyway. "Why did you save me?" I asked and Katherine gave me a look that I interpreted as guilty.

"I didn't particularly save you, Vanessa. You are in transition," Katherine told and I frowned.

"A transition to what?" I asked and my eyes widened when I remembered the journals that I had read when I was young.

Katherine nodded, confirming my guess. "A vampire."

Mystic Falls, 1864

"We have to leave, sister. The town is very much aware of our existence," Cassidy said hastily. Katherine suppressed the urge to roll her eyes and turned to look at her twin sister.

"Cass, I want to stay. I'm tired of running around," Katherine sighed. She turned back to the mirror, releasing her hair from the fancy bun. "How long has it been since we ran away?" Katherine asked softly and Cassidy plopped down on the bed. She hated it when Katherine did that. Her sister was very manipulative.

"But we have to. It's not our choice, Ri. We have to run if we want to survive," Cassidy reminded her sister.

"You don't have to remind me. I'm aware of that. Our whole family was slaughtered because I ran away, Klaus has made sure to remind me with that for my all eternity!" Katherine's voice shook and Cassidy met her brown eyes through the mirror.

"And I betrayed Elijah for you. Our family was murdered because of me too," Cassidy said quietly. The memories of her family being impaled, the blood, it made her sick.

"Why? Why us?" Katherine asked, tormented and Cassidy shook her head. "What have we done, sister?" Katherine stared into Cassidy's piercing blue eyes, searching for answers.

"We did nothing wrong, Katerina. We only wanted to live," Cassandra said sadly.

"No, no, no, no," I muttered to myself, pacing around the room. "I'm not in transition. I can't be."

"The sun's hotter now, isn't it?" Katherine asked and I glared at her. It was true though. It was 9 a.m. but and I didn't find the sun ray to be warm. It was hot and burning my eyes. I sat down back on the bed, away from the sun.

"I can't. Live. Drinking. Human. Blood."

"Hmm hmm," Katherine gave me a smile and I rolled my eyes, frustrated. I never knew there would be another person that was more annoying than Elena. "It's not that bad, really. And I think, you're going to make a great vampire."

"I hope that's a compliment," I muttered under my breath and Katherine laughed.

"Oh, come on! You have Petrova fire, I saw you struggled to live," she said.

"Petro fire what?" I asked, raising an eyebrow.

England – 1492

"Ri! Ri!" Cassandra's hysteric screams would have given her away to Klaus but she was too panic to care. The double door was locked and if she was human, Cassandra couldn't push it opened but she was a vampire now. The doors opened easily, breaking the lock and she saw Katherine being tied in the corner.

"Hmm!" Katherine tried to yell for her sister but her mouth was tied. Her eyes widened when her sister appeared in front of her in a flash but relaxed when Cassandra released her from her bounds.

"You need to listen well," Cassandra said and Katherine looked at her sister. "You know about the sacrifice, do you not?"

"Yes! He was going to kill me!" Katherine said in panic. She was still shocked about the new information of who the Mikaelsons truly were and was really betrayed as she had thought Klaus really did love her.

"Vampires? Did he tell you of their existence?" Cassandra asked and Katherine nodded.

"If you become a vampire, your blood cannot be use for the sacrifice. We will be saved," she said. "You need to go, now!"

"What of you?"

"The sun burns me. I can't follow you, sister. But I promise-"

"We will find each other," Katherine said and Cassandra nodded.

"Now go!"

When Rose fed Katerina with her blood, the human knew everything was falling according to her plan. She waited until they were distracted, before the human hung herself. Katerina Petrova was dead.

Katerina gasped for air, she was in transition.

"What did you do, Katerina? I would have helped you live," Trevor said, hints of pain and torment were in his voice.

"You would have helped me run. That was never going to be enough," Katerina replied.

"It was enough for me," Trevor replied. He was in love with her, an advantage for her and a great disadvantage for him…and Rose. Katerina did not even care for him, she had never used him either. It was his choice.

"Do you not see, Trevor?" Rose questioned. "She used you to help her escape and me to turn her. Klaus will see our role in this," Rose said frustratingly.

"And for that I'm sorry," Katerina said.

"As am I…for this!" Rose ran to Katerina in her vampire speed, and drove a stake at her. But Katerina was quicker, as she grabbed the old woman to shield herself. Rose pulled out the stake, looking shocked and Katerina drank from the woman's wound, completing her transition.

"Please understand," Katerina said; blood smeared at her chin.

"You have just signed our death sentence," Rose hissed. Katerina looked straight into Rose's eyes. The newly turned vampire's brown eyes were glinting with Petrova fire.

"Better you die than I," she said before throwing the woman to Trevor, and escaped with her new vampire speed.

"So I'm assuming...you have a twin sister. And she looks exactly like me," I said slowly.

"Looked," Katherine corrected. "She's dead."

"Oh, I'm sorry..." I said, seeing the flicker of sadness in her brown eyes but her face remained emotionless.

"Klaus wants to break this old curse and it requires a doppelganger blood. As a vampire, you're safe."

"Elena's still human," I told her.

"When Cass and I fled, guess who wasn't happy? Klaus. He made his way all the way to Bulgaria, my hometown and slaughtered my entire family. All of them," Katherine said. "So he believed Petrova bloodline ended with me and Cassandra. He won't know about the two of you unless...well, that's not really the main problem right now. Elena should be safe for now," Katherine told.

"Did Klaus kill your sister?" I asked her softly.

"Klaus is not someone you should mess around with," Katherine told me regretfully. "In 1864, we settled in a small town, Mystic Falls. That's where I met Stefan. I was very happy and in love, something that I hadn't felt for centuries, so I forgot about Klaus. Cassandra wanted to leave but I couldn't effort to leave Stefan. That was my greatest mistake. She left town a few months after that and then the council-"

"The Founder's council," I said and Katherine nodded. My father was apart of the council. They dealt with vampires but vampires hadn't been around for ages.

"They rounded up vampires and burned us in the Fell's church. I managed to escaped but rumors had it that I died along with the others. So I could stop running, but I still do. Klaus is..." Katherine's eyes seemed to travel way back into the past until she finally shook her head. "If he catch me, I'm dead. He wouldn't just kill you, he will torture you until you wish you were dead."

"I found Cassidy a couple decades later, and for safety, we split up. In the 40's, I found out she was murdered brutally by Klaus," Katherine said and took a deep breath to compose herself. "I will tell you more, Vanessa. You need me to survive," she said and I knew she wasn't joking. Then a thought popped up in my mind.

"You still haven't told me why you saved me," I stated and Katherine's lips curled into a smile.

"You're very smart. Just like her," she said softly and then her face turned serious. She mentioned something about Petrova fire. And now I knew what she meant by it. Her brown eyes seemed to be glinting with fire, and the determined look on her face told me that she had a plan. A plan that would save her life.

"I saved you from dying," she told me. "So you owe me. You owe me to complete the transition," she said and I just stared at her blankly.

"Give me some time," I said slowly and to my surprise, she nodded.

"Make up your mind before night comes," she said, and turned to leave.

"Katherine," I called her and she turned around. The doe like brown eyes stared into me, but those eyes weren't my sister's. "My parents...they didn't make it, did they?" I asked and she hung her head low.

"I'm sorry," she said and closed the door silently.

I felt a tear rolled down my cheek before I let out a sob.

How can there be so many things happened in one night?

Katherine seemed a bit OOC here, I guess but watching American Gothic made me realized that we don't really know who she is. Oh well, reviews are appreciated!

I know this is kind of late to start a story, but I would regret so much if I didn't post this. So, review and follow this story!