Cassandra Summers, Buffy Summers twin sister, is bless with a gift, that she sees as a curse. Wrapped in a mystery involved Spike, she discovers her real purpose, and who she really is.

Spike/OC pairing, starting in season two. Goes through semi canon Angelus story line, and then branches into it's own story line.

Chapter 1

Cassandra Summers watched her twin sister, Buffy, brush her hair.

"Ow," her sister muttered, pulling the brush through.

Cassandra smiled as their mother walked in, "What's wrong?" She asked her blonde daughter, sending a smile to her raven haired daughter as she sat on the bed next to her.

"I spent a good part of my allowance on this new cream rinse, and it's neither creamy nor rinsey," Buffy replied, dejectedly.

"Life is hard, dear," her mother replied wisely, sending a smirk Cassandra's way.

"Don't I know it. Is that a split end?"

"I got the mail," Joyce started, her tone making Cassandra come to attention. She tried to send a warning look her sister's way, but her twin was oblivious.

"Good," Buffy replied, still brushing her hair.

"Which included a reminder notice about Parent-Teacher night. Thursday," Joyce's voice had turned stern, and she looked at both her daughters.

"That's good," Buffy replied evasively, looking at her sister a bit frightfully.

"Which you were planning on telling me about..?" She left the question open ended, waiting for an answer from one of her daughters.

"Oh, for the last two weeks." Buffy replied, turning to face their mother.

"We assumed you already knew," Cassandra replied quietly.

"Uh-huh. So, what do you think your teachers are gonna tell me about?"

"Well, I think they'll all agree that I always bring a pen to class, ready to absorb the knowledge," Buffy replied, taking a seat across from them.

"And, uh, this absorption rate? How is it reflected in your homework and test scores?"

"What can you really tell about a person from a test score?"

"Whether or not she's ever going out with her friends again."

"Oh, that," Buffy replied, dejectedly

"Well, I look forward to meeting your principal," Joyce replied before turning to her raven haired daughter, "and what about you, Cass? Am I going to be happy after meeting your teachers?"

"My test scores are fine," she murmured back softly.

Joyce and Buffy frowned at the subdued tone in her voice. Cassandra was never the bubbly Valley Girl that Buffy was, but back in LA she had fire and attitude. Since Buffy was expelled, Cass withdrew into herself. It worried Joyce to no end, having one daughter getting into trouble while the other became a shell of what she once was.

Buffy was as worried as her mother, but unlike Joyce, Buffy knew why Cass had become so meek and quiet. Knowing the reason didn't really help, Buffy spent a lot of her time worrying about her sister. She may only be a couple of minutes older than Cassandra, but it was still the older sister's job to protect the younger. It gnawed at her that she couldn't do anything to help Cass.

"Look, girls. Life is more than grades and homework and not getting kicked out of school."

"I know," they chorused together, bringing a small smile to their mother's face. "But we moved once because of you getting in trouble," she directed to Buffy, "and Cass, your therapist suggested a new start would help bring you back to your old self," Joyce waited for her youngest daughter to reply. Cass continued to stare at her hands, saying nothing, so Joyce sighed and continued, "And I had to start a new business, not to mention a new life in a whole new town."

"And you don't wanna do it again," Buffy replied."

"What I don't want is to be disappointed in you again."

"Mom, that's the last thing that I want, too," Buffy replied, breathing in deeply, obviously frustrated, "I'm trying, I really am. I just... I have a lot of pressure on me right now."

"Wait till you get a job." Joyce replied sardonically, getting up to leave, "Sleep tight, girls."

Buffy stood up and walked to her desk draw, opening it and looking at the Holy Water and vamp killing supplies Cass knew she kept in there, "I have a job," she replied, murmuring to herself.

"You know she's just worried, Buff. She just doesn't understand why we changed so much," Cass commented quietly, trying to make her sister feel better. It always amazed her how much their relationship had changed since Buffy was Called. Before that, they could barely stand to be in the same room. The air-headed valley girl that Buffy was before her Calling drove Cass nuts, and the Buffy from before couldn't understand why her sister refused to try and be more popular. She used to strongly believe that Cassandra's grunge style should have stayed in the 80's. A lot of things changed when Buffy became the Slayer. Their relationship was one of them.

Buffy sighed, moving to sit next to her sister, "I know, and it's not like we could tell her, she'd freak."

Cass leaned over to grab her sister's hand, "don't worry, I'll help you set up for Parent's Night."

Buffy smiled widely, letting her face shine with happiness, "thanks, Cass."

The next day found the Summers twins making banners with the help of Willow and Xander.

"Sheila's a no show?" Willow asked, receiving a nod from Buffy, she continued, She goes to this really rank bar, the Fish Tank, sometimes they have raids and… other things that could make you tardy."

Buffy barely heard her, the stress of the week setting in for her, "can you help me cram some French tonight? I don't want Mr. DeJean telling my mother I'm an imbecile!" she finished her last word with a terrible French accent, making Cass smile.

"I thought we were going to the Bronze tonight. 'Cause of how you thought Angel might show," Willow replied.

Cass frowned at the vampire's name. She didn't understand why, but she didn't like Angel. Everyone assumed that she was just protective of her sister, but that wasn't it. She had no reason to not like him, Angel had always been kind to her, but something about him didn't sit right with Cassandra.

Xander replied to Willow, distracting Cass from her inner thoughts regarding Angel, "If he does he'll meet some other nice girl," he jokingly commented, getting a smile from Cass, "Studying comes first." He declared, reminding Cass of his crush on Buffy, obliterating the smile from her face.

Cassandra was disappointed in herself for developing a crush on Xander. Not only was he totally not her type, but she hated herself for falling into a weird high school love triangle.

Or is it a love square? She thought to herself, as she watched Willow smile at Xander as well. Not only did she share her crush with Willow, but he was obviously into Buffy, making it especially awkward when Angel was around.

"We're going to the Bronze," Buffy declared, taking Xander's comment to heart, "I can study and party and do parent teacher night and make my mother proud as long as I don't have to…"she started, seeing Giles and Ms. Calender approach, "fight vampires," she finished dejectedly.

"There's nothing in the Chronicles about an extraneous lunar cycle," Giles replied to Jenny, joining their group, and continuing their conversation.

"The Order never accurately calculated the Mesopotamian calendar! Rupert, you have to read something that was published after 1066."

"What's the up, guys?" Xander asked, his use of the English language made Cass want to cringe

"I don't suppose this is something about happy squirrels?" Buffy asked, hopefully.

"Vampires." Giles replied deadpanned.

"That was my next guess." Buffy replied dejectedly.

"Ms. Calendar has been researching, surfing on her computer. According to her calendar, this Saturday is the Night of Saint Vigeous."

"Lemme guess. He didn't make balloon animals," Buffy said sarcastically.

"He led a crusade. Of vampires. They swept through Edessa, Harran, and points east."

"They didn't leave much behind," Jenny added.

"So Saturday's kind of a big doo for bloodsuckers," Xander clarified.

"It's a Holy Night of Attack. They'll come in numbers," Jenny confirmed.

"If I survive parent teacher night tomorrow, I'll see what I can do about Saturday," Buffy commented.

"You're being a tad flip, don't you think? This is serious," Giles replied.

"And being kicked out of school is laughs aplenty?"

"You know what happens when you let your life interfere with your slaying," Giles remarked, trying to speak sense to his Slayer.

"Giles," I interrupted whatever Buffy was about to say, "If Buffy gets kicked out of school, we'll have to move again. She won't be here to look after the Hellmouth at all."

Buffy smiled at her sister in appreciation. Giles seemed to consider Cassandra's point, but he continued on "You just need to keep the two things separate."

Buffy rolled her eyes in Cass' direction, making her smile, "Yes, well, if my slaying doesn't get me expelled, I promise my banner making won't get me killed. Just let me get through the week."

"Saturday will require a great deal of preparation," Giles commented, pushing his point.

"Well, we'll help," Willow offered.

"Yeah! I can whittle stakes!" Xander declared.

Willow smiled in Xanders' direction, "And I can research stuff."

Xander smiled broadly to match Willow, "While I'm whittling, I plan to whistle a jaunty tune."

"Your help will be appreciated. But when it comes to battle, Buffy must be prepared to fight alone. You are, after all, a slay-"

Cassandra had already gone back to painting the banners, and interrupted Giles' lecture, "I don't think you'll have to worry, Giles," Cass interrupted quietly, "I don't think it's going to pan out like you think."

"Why? Did you have a-" Giles started, but Cass interrupted him again, noticing Snyder approaching, "No, just a feeling."

Giles spotted Snyder, grabbed Jenny and made a hasty retreat, not wanting to talk to Sunnydale's principle.

Having arrived at their crafts table, Snyder turned to Willow, Xander and Cassandra, "you wouldn't be helping Buffy in Sheila's place would you?"

Cassandra quickly put the brush behind her back, "No."

"We're hindering," Willow tried to scramble, covering for Buffy and Sheila.

Snyder looked around, "She ditched. Mmm-mmmm, I feel an expulsion coming on."

Buffy looked panicked, "She's been helping for hours. She's just out getting more paint…"

Following Snyder's gaze, the Scoobies watch as Sheila made her appearance, doing her best Courtney Love impression. She was still wearing her clothes from last night, and was sporting a dark pair of glasses, obviously to stop the glare of the sun. Buffy ran over to her, dragging her by the arm to the crafts table.

"No more teal in the art room? I know you wanted it to be perfect, but let's just keep going with the green," she grabbed the brush from Cass' hand, and putting it into Sheila's.

She plops Cassandra's brush in Sheila's hand.

Snyder sneered at their obvious lies, "Just make sure everything is perfect on Thursday," he replied, storming off to harass another student.

"Thanks for covering. Guy's a serious rodent," Sheila drawled, not seeming to really care.

"No problem," Buffy replied, going back to work.

"Did you really burn down school property one time?"

"Well, not actually one time…"

"Cool," Sheila replied, earning a smile from Cass and Willow for what she considered 'cool'.

"But I didn't feel good about it or anything. I mean, I don't condone…So. We're gonna Bronze it tonight, if you wanted to come," Buffy offered to her fellow delinquent.

"I can't go there. You threaten one bartender with a broken bottle and they like ban you for life," she replied with a scoff.

"Ahhh," Buffy replied, as if Sheila had just said something reasonable.

Cassandra looked at herself in the mirror. She had always had a good body, inheriting their mother's good genes. Her raven hair came from their father's family, but her green eyes were from her mother, almost matching Buffy's hazel. In many ways, she was the opposite of her twin, with dark hair and pale skin. Tonight, those differences were accentuated by her outfit. She wore a tight black dress, which hugged her body, and ended half way to her knees. She wore her favourite pair of combat boots, with stockings and finished the outfit with a leather jacket. Around her neck hung a necklace, with a silvery cross hanging from the chain. It had been a gift from Buffy. It was fashionable enough that people wouldn't think it for the protection it really was.

Finishing her look off with bright red lipstick, she left her room in search for her sister.

Cass sat with Willow, trying to help with Buffy's French tutoring, while Xander danced solo on the Bronze dance floor.

"La vache doit me touche de la jeudi," Buffy said, earning a frown from Willow, and a smirk from Cass, "is that wrong? Should I use the plural?

"No, but you just said that "the cow should touch me from Thursday," Willow explained

"Well, maybe that's what I was feeling."

"And you said it wrong," Willow added, earning a snort from Cass as she drank her drink.

"Oh. Je stink."

"You're just not focused. It's Angel missage."

Buffy perked up at Angel's name, "Well he didn't say for sure, it was a maybe see you there kind of deal."

Xander joined them, "Guys! I'm all alone out there! Somebody has to dance with me."

"Well, we are studying," Willow explained.

"Come on, one dance! You've been studying for nearly twelve minutes!"

Buffy slammed her book shut, "No wonder my brain is fried."

Willow and Buffy stood up, ready to head to the dance floor, "Cass, you gunna come shake your groove thang?" Xander asked, doing a little dance on the spot.

Cass smiled, but shook her head, preferring to people watch instead. She continued to smile as she saw her sister and friends dancing together, getting joy from their happiness. Dancing wasn't really her thing, but she was glad they were having a good time. Her gaze strayed from her friends, and shifted to the crowd, watching them dance and socialise. She loved to people watch, she always found that people did the most interesting things when they thought no was was watching. Her gaze soon landed on a handsome man with bleach blonde hair. His hair was gelled back, and made his cheek bones stand out even more than they already did. His blue eyes were piercing and intense.

He's beautiful, Cass thought to herself.

While staring at him, she could tell he was watching someone as intently as she was watching him. She followed his gaze to her sister.

Of course! The only guy in this bar I'm attracted too, and he has the hots for my sister. Typical.

Cass sighed, and dragged her eyes away from the handsome man. She continued to watch the crowd, but couldn't seem to stop her eyes from going back to the man. Soon enough, he felt her gaze and looked in her direction, catching her stare. She blushed furiously, making the man smile devilishly, before disappearing into the crowd.

Deciding that she had enough people watching for the night, she got up to join her friends, when she heard someone shout for a phone, needing to call for help. She turned to Buffy, watching as her sister ran out the side door to the alley way. Figuring it was a vamp attack, she grabbed her sister's bag, pulling out the stake she kept in there. Hiding the stake in her jacket, Cass took off for the door.

Cassandra made it outside as Buffy kicked the vamp in the head. Unfortunately the vamp was tough, and quickly recovered, throwing her against the wall. He charged her, hoping to take her out while she was off balance, but she quickly ducked and pivoted away, avoiding his arm.

Xander and Willow ran out of the Bronze, joining them in the alley. Cass pointed to the young girl the vamp had been attacking, "Get her out of here!"

Buffy was still trading punches with the vamp, "And" punch "a stake" punch "would be nice." She finished with another kick at the vamps head.

"Buff!" Cass shouted, "heads up!" she threw the stake at her sister, who caught it effortlessly, however the catch distracted her, and the vamp managed to knock her down, and leaned over her.

"I don't need to wait for Saint Vigeous. You're mine!" Buffy quickly kicked him back, not giving him an extra inch

The vamp got nervous, "Spike, give me a hand."

Xander, Willow and Cass looked around, wondering who he was talking to.

Buffy quickly dusted the vamp, but was stopped from saying anything else by the sound of slow clapping coming from the other end of the alley. The man that Cass had spotted watching Buffy earlier stepped from the shadows. He was even more handsome closer, if that were even possible.

"Nice work, baby," he directed to Buffy. He turned his gaze to Cass, his grin widening as he recognised her from before, "hullo, cutie," Cass blushed, to his obvious delight, but didn't respond.

"Who are you?" Buffy demanded.

"You'll find out on Saturday."

"What happens on Saturday?"

The man, who was obviously Spike, stared at the Slayer, "I kill you."

As the words left his mouth, Cass screamed out as her mind erupted with pain. She bent over almost in double, clutching her head. Buffy ran to her sister, while keeping an eye on Spike, "Cass? Cass, are you okay?"

Spike watched from the sidelines, curious. After living with Drusilla, he recognised the girl's pain for what it was. She was having a vision.

Cass closed her eyes, focusing on the vision being projected into her brain. Images flashed through her brain.

Buffy fighting a dark skinned girl

Flash

Angel smirking evilly as he stood next to a blue monster. They watched over a crowded mall.

Flash

The dark skinned girl from the first vision fighting a vamp with long dark hair.

Flash

Angel standing over a scared Buffy, while a wheelchair bound Spike watched from behind them. Spike standing from his chair, hitting Angel over the head, allowing Buffy to gain an advantage.

Flash

Buffy crying as a stone monster closed its mouth, taking away a swirling ball of energy.

Flash

Spike pulling Cass from danger.

Flash

Hooded figures sitting in a circle, chanting. In the middle of their circle was a masked girl. She seemed to be unconscious

Flash

A large swirling pool of energy on the ground, with a giant hand reaching through it.

Flash

The gang, and Spike, fighting unknown enemies.

Flash

A giant Greek style pedestal, with a body at the top, and a large staircase leading up to it. Bright green energy wrapped around the pedestal, protecting it. Spike rushing to the top of the pedestal, reaching into it while his hands caught fire. Spike's face, already bruised and cut, cracked open in a wordless scream while he reached for the body.

The visions ended, as did Cassandra's pain. She straightened her back quickly, staring at Spike in shock. Spike looked back at her, clearly interested in what was happening.

She didn't understand most of what she saw, but that was pretty usual. She may not always know what the visions mean, but she usually got a strong impression on what the visions were trying to imply. In this case, she knew exactly what they were trying to imply.

"Spike," she said, breathlessly, "You're a Champion."

A/N:

so tell me what you think! Reviews are always appreciated

I hope some of you pick up on a theme here and see where im going with this. Hope you enjoyed it!