Kathryn Merteuil had never really got to know her father, he had left Tiffany when Kathryn was 4 so she really didn't know him or remember him too much. She never had visited him in South America and never called.

When Tiffany told Kathryn the news about her father the day she came back Kathryn was not all that sad about it, until later on when she realised that she never knew him and never got the chance to be apart of his life. Death usually wasn't something she wallowed in, but her father's sank in.

"Don't talk unless you're spoken to Kathryn" Her mother ordered as they walked into a lawyer's office for Richard Merteuil's will.

"Good afternoon ladies, I'm sorry to hear about Mr Merteuil"

"Thank you"

"Now to this will"

Kathryn and Tiffany took a seat on the two chairs that were positioned in front of the mahogany desk of the lawyer; the lawyer pulled out a document from a draw and opened it up, putting on his glasses and scanning over it for the parts relevant.

"Blah blah blah, I wish I had of gotten to know you better my sweet Kathryn"

Kathryn smiled.

"To Kathryn I leave my South American estate, my photography and modelling business, my holiday house in Barcelona and the $7 million fund I had been saving for her"

"Do I all get that?" Kathryn asked.

"As long as you are over 18"

"I am"

"And what about me? Anything about Tiffany Merteuil?"

"Only this small part; To Tiff, I leave behind our memories and children"

"Excuse me? No money?"

"Sorry miss"

Sebastian woke up from a not so deep sleep, he looked to his clock which read 7.53am he had been asleep for almost an hour. Usually he would get 3 – 5 hours of sleep a night, but last night he had kicked Ashley-Kate out of his bed and couldn't get to sleep.

He showered and dressed before heading downstairs with keys in his hand, he figured that he could get away quite easily without anyone noticing, he just wanted to go away for a day or so to have a think and free his mind from Kathryn and all the problems she can cause.

"Well no, I was thinking of changing some things, maybe the name" Kathryn spoke.

Sebastian knew that voice from anywhere, the iciness and sheer proper ness of her voice it could only be one person, Kathryn. He had know idea what she was doing at the Valmont house but he was trying to slip out before anyone noticed him.

"Hmm, you could, but you could also lose…Sebastian, good morning" Edward said.

Kathryn didn't turn around, she kept her posture straight and breathed in a long breath. She was hoping that he would either be out already or had not woken, she wasn't really in the mood for Sebastian right now, if at all after what she was informed of at the club.

"Good morning dad and Kathryn. What may bring you the pleasure of being here Kat? Fucking my dad now?"

"Actually Sebastian I'm inquiring on some things from your dad, seeing as he is such a great businessman"

"Sebastian, maybe you can give Kathryn some help, I have a meeting soon so I have to go and you did a business degree…"

"I have places to be sorry"

"Sebastian!" Edward said sternly.

He rolled his eyes and sighed, helping her was the last thing he ever wanted to do, he sat on the couch as his dad got up and left. He had know idea where Julie, Sadie or Mitchell was but he was guessing they were out shopping.

"Look thanks Sebastian but I think you are the last person I'd want help from"

"What!? Why?"

"Seriously? You wouldn't know business or how to help anyone if your life depended on it, good day"

"Wait" Sebastian grabbed a hold of Kathryn's arm and pulled her back.

"What?"

"I'll help, I'll try, what do you need help with?"

"Well my dad passed away and…"

"You had a dad?"

"Yes Sebastian I had a dad"

She nodded her head at him then rolled her eyes, gosh he could be an idiot sometimes.

"Wow"

"Anyway, he left me two business's and an estate in South American, a holiday house in Barcelona and $7 million, I was wondering if it was possible to change the name of the business'?"

"He left you all that?"

"Yes Sebastian"

"What were the business'?"

"A modelling one called Merteuil Modelling and a photography one called Flash"

"Why are you wanting to change the names of them?"

"Because I want to revamp them both and make them my own I can't do that right now"

"It is possible to change the names but you can lose business from it and it can be very expensive, not that you have to worry because Jesus you basically are richer then me"

She smirked, it was nice to know that she could be richer then Sebastian, she always had power over him in most respects, except the money side, her mother was rich but let's face it, Sebastian's dad had business' all over the world, he made billions every day, he was rich.

Sebastian got up and walked over to his father's desk, pulling out a few papers and putting on his glasses then walking back over to Kathryn. The papers were those that Kathryn would have to fill out to change the business name.

"Here, fill these out and bring them back to me tomorrow"

"To you?"

"Yes I'll file them and make sure they are all correct Kathryn"

"Thanks"

The elegant Kathryn stood up from her seat, Sebastian' doing the same. She leant in and kissed his cheek softly, kind of a thanks for helping her I guess. He smiled and rubbed her back.

What they both didn't realise was that Ashley-Kate saw it all, she had just come downstairs and was waiting for Sebastian when she walked in and saw Kathryn kiss him on the cheek, Ashley-Kate was jealous, Sebastian was hers now not Kathryn's.

"What the hell are you doing here!? This is not your house princess"

"Sebastian was helping me with some business, I'm going now"

"Good, be gone"

Kathryn started to walk away, offended and saddened the way that Ashley-Kate treated her, but she was right. It wasn't her house anymore and it wasn't her place to be there, Sebastian had moved on now and was no longer hers.

Sebastian piped up after Ashley-Kate had told Kathryn to leave, he didn't like the way Ashley-Kate treated Kathryn, he was the only one who was allowed to treat her like dirt, it was not her place and he wouldn't stand for it at all.

"Don't speak to her like that Ash, she has as much right to be here as you"

"No she doesn't, she does not live here! I live here, you live here. We live here"

"Sebastian don't worry about it, I'm going"

"No Kathryn I am going to worry about it, Ashley-Kate stop thinking you are everything because your not, you are such a fake"

"Excuse me? That's no way to treat me Seb, I am your girlfriend"

"Don't call me Seb and from now on you are only my step-sister, not my girlfriend"

The poor girl bit her lip to stop herself from crying right there, Kathryn smiled that cunning smile at Sebastian, he had stuck up for her and she was quite flattered. He smiled back to her and walked over to her to show her out the door.

A party of one of the New York elite woman and men was always something grand, but once every year there would be one party that would be the biggest and the best. It blew every other party that ever was thrown out the window because when the time of the year came everyone always talked about it weeks before hand and shopped for the perfect dress. The party; Sebastian Valmont's birthday.

Sebastian never really enjoyed the parties he was thrown, simply because his father organised it. Everyone from Manchester, their mothers, fathers, aunts, uncles, cousins and siblings were all invited to the once a year party. Every girl in New York would try score with him that night, few rarely succeeded because Sebastian ever since his father and Tiffany had married left that one night for Kathryn, who mind you never came to fuck him, but he always hoped and waited.

The day had passed relevantly quick, his father and step-mother hadn't been home, they had been organising last minute things, all the kids except Sebastian had gone with them, so he was left alone in his large townhouse on his birthday.

He was dressed and had eaten and was really quite bored, his father had already given him his birthday present which was probably the worst present he had received from him in all the years he could remember.

That morning his father had taken him down to the pier and shown him a very luxurious and lush boat, or rather cruise ship. If his father had taken time to get to know Sebastian more maybe he would have reconsidered this choice of present because Sebastian didn't really like boats or sailing or really anything to do with the water, occasionally he would take a cruise somewhere but rarely.

It was starting to get closer to his party, his father and Julie were home along with Ashley-Kate, Sadie and Mitchell, all were getting ready and squeezing into their tight dresses and uncomfortable shoes for the night, whilst Sebastian sat cosily in his desk chair writing a birthday entry in his journal to fill time.

"Sebastian" Julie called from outside his room.

Sebastian opened his door and walked out into the hall where he found Julie dressed in a lavish, probably really expensive black dress. She was calling his name looking for him, until she found him standing outside his room.

"Oh there you are, your guests are here Sebastian, come downstairs"

God how he hated greeting guests, people he hated. The fakest of the fake, the richest of the rich and the hottest of the hot. Everyone one of the guests coming were rich and beautiful people from the upper crust of New York, the finest people in all of New York. How he hated them all, how he hated their fake happy birthdays and fake smiles.

"Good evening Sebastian, happy birthday" A girl called Lydia greeted him, someone he had previously had sex with.

"Thanks"

He shoved the girl to the side and made his way to the bar, it was Sebastian's usual place at a party, for it was the only place he could sit and drink without being greeted by a million guests.

"Drinking again Valmont?"

Blaine Tuttle, the only person Sebastian would actually settle to be around tonight. He never was overly living about Sebastian's birthday, never called him up early to say happy birthday, or even say it face to face sometimes. Sebastian liked that part about him.

"Enjoying my party?"

"No offence Sebastian, but this really sucks"

"I know, so where's my birthday present?" Sebastian asked, giving Blaine a smile.

Blaine smirked back, he grabbed Sebastian's hand and placed it high up on his own, then licked his lips. Sebastian cringed at the way his friend was acting towards him.

"There's your birthday present, shall I give it to you now, or later?"

"How about never?"

"Oh c'mon"

Sebastian shook his head, turning around to take a look into the crowd, maybe he could find an attractive girl to fuck tonight. He scowered the crowd, no one really met his eye, well anyone that he hadn't already had sex with.

That was until his eye caught a very beautiful and tall woman standing over talking to Lydia. She was absolutely stunning. Her long black hair came down to her waist, contrasting with the emerald green dress she was wearing that night.

Who was she? Because Sebastian had never seen her in his whole life here in New York, though she seemed somewhat familiar and people from everywhere in the crowd seemed to be adoring her. God he had to have her.

"Kaitlyn Merteuil" Blaine said.

Sebastian hadn't really taken notice of her last name, just her first. He whispered her name to himself a few times before snapping back to reality and then realising that she was related to Kathryn.

"She's related to Kathryn?"

"Cousins, she's also a model"

That's when Sebastian knew where she was from, he had seen her in a few magazines before modelling underwear and swim wear mostly, but occasionally there would be a naked photo of her in some porno magazine.

If Kaitlyn was here, that would sure mean that Kathryn would have had to be here, she would have been the one to bring her here, but what the hell was Kaitlyn doing in New York, or America. She mostly lived in European countries, occasionally spending time in Asia for some modelling.

He got up and made his way through the crowd, people stopping him and wishing him happy birthday along the way. He stopped before he got to the other Merteuil and looked around for Kathryn, sure enough she was there.

"Hey Kathryn" He greeted her with a smile.

The two were on good terms lately, so there were no need for narky comments or disapproving looks to one another. She smiled back and placed her hand on his arm, gently kissing his cheek and wishing him a happy birthday.

"Here" She said, passing him wrapped package.

He ripped open the thin paper and looked at the box, he could not guess what it was just yet, so he opened the box and peered inside it. What was inside kind of surprised him, usually he would receive a watch or a pen or something of that genre, this year Kathryn must have been really generous because inside the box was a brand new camera, the latest and best model, something really expensive.

"Thanks" He said, kissing her cheek lightly.

"No problem Sebastian"

"So you are the infamous Sebastian Valmont?"

Kaitlyn Merteuil smiled at Sebastian and shook his hand politely; she was every bit as beautiful as Kathryn and every bit as elegant. Her body was filled out a little more and she was a bit taller then Kathryn too, but none the less still beautiful.

"Kaitlyn, Kaitlyn Merteuil"

"You're Kathryn's cousin right?"

Kathryn pried the two apart, stepping between them and pushing Sebastian to the side.

"Do you want the rest of your present Sebastian?" Kathryn asked him, smiling seductively.

But Sebastian had no reply, he walked closer to the other young Merteuil and admired her beauty, adored her in fact. Kathryn of course had the look of jealousy in her eyes; she could not stand for him to pay more attention to her cousin then her.

"Sebastian! Are you listening to me at all?"

"I hear you Kat"

"Kaitlyn, do you want to come up to my room and take a look around?" Sebastian linked is arm in Kaitlyn's, gesturing for the girl to go with him.

"Sure"

Kathryn watched as her cousin and lover walked off towards his bedroom together.

"You are very beautiful Kaitlyn" Sebastian said, playing with her hand.

"I know, hence why I model" She replied cockily.

Kaitlyn wandered around his room, noticing small things that interested her. Like the journal that lay on his desk and the camera he had which was placed by his bed. She could gather what type of person he was from things in his room, she didn't really need to. Kathryn had told her almost everything there was to know about the younger Valmont.

She picked up Sebastian's old camera, the one he used before Kathryn got him his new one. Placing her finger on the capture button she snapped a picture of a very handsome birthday boy. "Oops" she said, smiling at him, her very white teeth shining.

Sebastian got off the bed where he had resided whilst Kaitlyn had been wandering around his room, he took the expensive camera from her and grabbed her by the waist tightly. Pulling her into an almost hug, breathing on her neck, things that usually sent shivers down every woman's spine. Not Kaitlyn though, she remained still, not pulling away but not pulling him closer to her either.

"Maybe I can snap some shots of you?"

"In your dreams"

He kissed very lightly down her long smooth neck; this usually sent Kathryn into shivers, but not Kaitlyn. She was not easily persuaded. Her hands play with Sebastian's golden hair, twirling it around her finger then un-twirling it over and over again whilst he kissed her and held her closely.

His hand wandered to her leg, where he slowly made his way up her long, legs, caressing each lovingly. She went along with his motions until he reached her panties, he was almost there. Sebastian went to put his fingers inside of Kaitlyn's warm body when she pushed him back roughly, causing him to stumble and fall back on his bed, his camera still in his hand safe.

"Aww I didn't realize you are a virgin, I'll go slow I promise"

Kaitlyn laughed a laugh that he usually heard Kathryn do. "I'm about as much of a virgin as Kathryn is" Lighting up a cigarette and inhaling the deadly poisons it contained.

"Then what's the problem?"

Sebastian grabbed her arse and pulled her on to his lap, shoving the camera to the side so he didn't have to worry about it. Kaitlyn let out a tiny squeal, not expecting the roughness and persistence from Sebastian, not this early in their soon to be friendship.

"I don't…" He stopped her before she could continue, embracing her mouth, massaging her tongue with his own inside their mouths. Both their hands wandered each others bodies, exploring the unknown. The room was just about silent, apart from the quiet kissing sounds that could be heard from the pair breaking away and starting again. "do…" she started to speak again when they broke away. His mouth latched onto the skin of her long neck, bruising it almost, with his hard kisses. "sloppy seconds" Kaitlyn said, pushing him back and getting off his lap.

"Excuse me?"

"Let me speak a little clearer. I am not going to fuck you Sebastian" Kaitlyn spoke as if she were trying to teach a 2 year old how to count.

"And why not?"

"Simply because of Kathryn?" She adjusted herself, pulling her hair down to cover the red marks on her neck from Sebastian.

Before he could answer her or persuade her otherwise, she had gone, shutting his door behind her to leave him to wonder and ponder on his own thoughts while she went out and found someone else to fuck, someone who hadn't been with Kathryn.

Even though Kathryn no longer lived at the Valmont townhouse, she felt free to roam around and wander into whatever room she pleased, not really feeling out of place or like she didn't live here anymore, after all it had been her home for quite a number of years.

She passed down the hallway, the hallway which included both Sebastian's room and her old room. If Kathryn had had x-ray vision she may have tried to peer into Sebastian's room to see exactly what was going on, seeing as she had seen her cousin walk out the door with a different man who wasn't Sebastian. Yet she hadn't seen Sebastian again since when he walked off with Kaitlyn.

But seeing as Kathryn did not have x-ray vision she wanted to go in and take a look. No Kathryn don't, you don't want him to think you care. She thought to herself, standing in the middle of the long hallway wondering whether she should or shouldn't go inside to see what exactly he was doing. But curiosity got the best of her and Kathryn could not help but wander casually inside and see what her former step-brother was doing.

As she opened her door, expecting to her moans or people scurry for their clothes she heard nothing but silence. Maybe Sebastian and his bed mate for the night were sleeping, but Kathryn hadn't seen anyone wander up stairs to his room and she had been watching it all night, as if Sebastian was her treasure.

Much to Kathryn's surprise she found Sebastian alone and asleep. He was covered by the expensive blue blanket that lay on his bed, dressed in his boxers and no shirt. She stepped closer to see if he really was sleeping, because whenever she used to think he was and she would go closer he would wake and pass her a smile. But as she stepped closer he did not open one eye, or two, or even stir. Nope Sebastian really was asleep.

Now Sebastian was a very light sleeper, and Kathryn knew this. So she dropped something that crashed a bit loudly. Something like that would usually wake him up, but not tonight. In fact this was one of the only times she had known Sebastian to be in a deep sleep alone. The only other times she had known Sebastian to be in a deep sleep was when he was with Kathryn, when they had fucked or when they had slept in the same bed entangled in each others arms.

"Sebastian?" She whispered, not quite knowing what to expect.

But she should have guessed that he wouldn't wake up. Kathryn sighed; she had wanted to talk and maybe ever give him the other part of his present even though he had bluntly ignored her and walked off with her cousin.

She could not help but to smile at his almost lifeless body. She loved the way he slept, how his tired eyes finally got to be put to sleep and he would be at peace.

Kathryn climbed into the large, warm bed beside him, expecting for him to then stir. In usually cases Sebastian would put his arm over Kathryn and cuddle closer to her as if never to want to let her go, which was usually what he was thinking.

But as Kathryn tried to get closer he in fact stirred, but moved away a bit and not draping his arm over her slender body like usual. She stroked his handsome face lightly, running her fingers on the stubble that was starting to appear on his jaw line.

"Never leave me Sebastian"

A moment of vulnerability, something Sebastian may never witness whilst being awake as it was something Kathryn didn't like to think she was, vulnerable. Not her, Kathryn was not, she did not need anyone, maybe she needed Sebastian, but it was not known to anyone not even Blaine that she needed him.

Kathryn was afraid, that dream she had had a while ago about Sebastian dieing, she didn't want it to come true and she was scared that it would. A tear ran down her china doll cheek, snuggling against his warm body and wiping the tear away.

Kathryn Merteuil was trouble most of the time, and Kaitlyn was aswell. If only Sebastian and Kathryn could see the trouble that was going to send them over the edge, the trouble that will tear the two apart and break their bond like it was nothing to start with.

Kaitlyn Merteuil was the trouble, the trouble that would end all endings. A sweet, bitter, silent killer would up root New York and the former sibling, they won't see it coming, no one will and if no one does see it coming then who's there to stop it?

A/N: I'm sorry I haven't updated in awhile, I've been really exhausted and busy lately and have been adding things bit by bit to my story, I eventually got motivated by someone who asked me to update soon.

So here is you chapter and I hope you liked it. Please let me know what you think and I'm up for anyone who has suggestions on what might be going to go down in this story.

Please don't forget I am looking for someone who will read over my chapters before I put them up, to correct all the errors in spelling and grammar.

Thanks heaps and don't forget to review.