Disclaimer: I sadly do not own Buffy, SVU, or any character associated with either Series.

AN: This is a response to challenge number 4815; Surprise! I'm your sister.

I have been wanting to write this for many years, and now I have managed to form some words. I hadn't planned on posting thins until the story was completed, but I figured I would see if you like what I have so far. (I hope you do!)

I'm sorry if I missed any mistakes. If I have please point them out so I can fix them.

To lovinTiva: I really hope you like this, and that it measures up to what you were hoping for

Chapter 1: Learning the Truth

Olivia was sitting at her desk when her partner, Eliot Stabber, shuffled into the bull pen. She looked up when she heard him approaching, thankful for a small distraction from the mounds of paper work she had to complete. "I hear you got Patty Kendall. Congratulations."

"Thanks," he said, and then pulled out the envelope Doctor Warner had given him. "And Warner asked me to give this to you. You had a kinship analysis done," he stated slyly.

Olivia accepted the offer envelope. "Yeah. It's for a cold case," she said feigning disinterest, despite her heart thudding hard in her chest. She was sure he could hear it too, it was beating that loud.

"You're not working on any cold cases right now," He said knowingly. He had spent enough time over the years to see when she was lying to him. "What is it?"

Olivia ignored his question as she opened the envelope. She took an unsteady breath as she looked at the results of the kinship analyses.

"Liv, who's DNA did you have tested," Stabler pressed, even more curious than before.

"Mine," she said, and then looked up at him. "I have a sister."

X-x-x-x-x-x-x-x-x-x-x-x-x-X

Three Months Later…

"Liv, are sure about this?" Stabler asked, for the countless time. Olivia knew he was just looking out for her, but his pestering was becoming annoying. If this is what it was like to have a sibling, she almost didn't want to go meet her sister.

"I'm sure El," she said, for what felt like the tenth time that day. She grabbed her duffle of her desk and made sure her sister's file was in there. "I'll be fine. I will only be gone for a few days, and it's not like she can hurt me."

"You don't know that," Elliot insisted.

They had been over this argument so many times since she announce she was going to visit her, that she could recite it in her sleep. "Yes, she is a murderer. Yes, she is in jail, and yes, I have to do this. I have to meet her, Eliot. She is the only family I have. Please, just call off the big brother routine and go have a nice time off with your family."

Eliot threw his hands up in defeat. "Alright, alright. I'll reign in the big brother. Just know you do have family here, Liv. Kathy has been trying to get you to come over for dinner for years."

"I know. Something always gets in the way," Liv said, and then set her duffle back down. "When I get back, well have dinner, and I'll tell you all about my trip."

"Deal," Eliot said, and then open his arms for a hug. They weren't usually the touchy-feely types, especially at work, but he felt like this time it was warranted. She stepped into his arms, and for a moment, allowed herself to be embraced by somebody who wasn't a love interest or a victim. "Call me when you land, and when you leave for the jail, and when you leave her."

"You're doing it again," Olivia chuckled. She turned to grab her duffle, checking again that she had her sister's file, before heading outside to the cab that was waiting for her.

The ride to the airport was fairly quick considering she was in New York City. It was the plane ride that seemed to take forever. The closer she got to California, the more anxious she became. She tried to settle her mind by reading over her sister's file again. She had been struggling with how she was going to do this. She had dealt with a lot of criminals and her sister's file was pretty gruesome.

Faith Lehane, confessed to killing two men, one attempted murder, and several assaults. What bugged her the most about the file was what wasn't in the file. Like how the Sunnydale police knew to look for Faith. There wasn't an eye witnesses, no hot line tips, no DNA, no fingerprints, there wasn't even hair fibers linking her to Allen Finch. In fact, when Faith's case was taken to the judge, the only sliver of evidence they had on her was the breaking and entering and assault of her last victim. She just walked into the police station and openly confessed to crimes she hadn't even been accused of doing. Like the murder of Professor Lester Worth.

Why would she do that?

And on top of it all, she had only been sixteen when she committed those murders. There was so many questions floating around in her mind. There seemed to be two very different people portrayed in the file. One was a hardened criminal, and the other was a scared teenager. She wondered which one she would meet.

Before she met with Faith, she wanted to meet with the warden, Lila Fields. During her research she discovered the warden had been a decorated detective with the San Francisco police department. After retiring, she was hired on as a prison guard, and quickly worked her way up to the warden. Olivia was hoping that Lila could give her a good sense of how Faith was. She hoped that with her police background she could paint her a better picture in her mind, so when she did meet with Faith, she was better prepared.

Cause, god damn was she nervous.

X-x-x-x-x-x-x-x-x-x-x-x-x-X

The next day, Olivia sat in the Warden's office, waiting for the woman to arrive. It had already been nearly an hour past their scheduled appointment, and Olivia was beginning to grow impatient. She had to turn in her gun at the front desk, leaving her feeling exposed. She had already been antsy and giving up her gun had only increased her agitation.

Thankfully, she hadn't kept her waiting too much longer. Lila Fields came barreling through her door at half-past one, mumbling under her breath, and looking quite disheveled. "Sorry. Sorry," she said as she threw a duffle bag filled with loud clinking items. "There wa a problem with on of the bunk searches. A couple of the girls weren't happy that the guards found their stashes and put up a fight. Thankfully it was only contained to one room, or else I would have had a riot on my hands."

The woman sat into her chair and smiled at Olivia. "Some days I miss being on the streets. People were less cranky then some of my girls. Though, I suppose you would rather be in my seat most days. Special Victims is not an easy unit to handle."

"No, it's not," Olivia agreed.

"So, what brings a New York detective to my prison?" The warden asked.

"I'm here to see one of your prisoners, but I wanted to get your perspective on her first," Olivia said.

"Alright, I'll see what I can do," Lila said, as she opened her laptop up. "What is her name?"

"Faith Lehane," Olivia said.

Lila chuckled and then closed her laptop. "Oh, Faith I know well. Question is, what do you want with her?"

Olivia knew that she was going to be asked that, and she debated on whether she should lie, or tell the truth. In the end, she figured the truth would get her farther than lying. "She's my sister."

Lila's eyes grew wide. "Now that I wasn't expecting. Faith has never mentioned having a sister."

Olivia eyed Lila carefully. She never heard of a prison warden who knew one of their wards enough to talk about family.

"I know that look," Lila laughed. "Don't worry detective. I'm not taking advantage of you sister. Faith is my file clerk slash assistant. She spends every morning with me. My way of making sure she stays out of trouble."

"Has she gotten into much trouble since arriving?"

"Well there was an incident just a few weeks after she arrived. Four of my lifers decided to break Faith in. It didn't turn out quite the way they thought. All four of them ended up in the infirmary, while Faith didn't have a scratch on her. She was mess when we found her though. Huddled on the floor crying like a baby. She just kept repeating, I'm sorry, over and over again. Doc gave her a sedative, and the next morning she was her usual brash tough self. I still can't get that image of her taking those women down like they were test dummies. Knew right then that she was different, and it was probably best to keep a close eye on her."

"It was caught on camera?" Olivia asked surprised.

"Yeah. Ruby ain't the smartest bulb," Lila said, and then she stood up and walked to her shelves to the left of her. She returned a minute later with cd in hand. She opened her laptop again and slipped the disk into the disk drive.

Once the disk loaded, Olivia could see Faith on the screen. She was rolling a caddy full of books down the hall towards the camera, when a tall thin blonde came out of nowhere and pushed Faith into the wall. Two more women, both were brunettes, but one was muscular and the other short and overweight, can be seen walk from behind Faith, and redhead came from where Faith was heading. There was no audio, but you could clearly see Faith said up and tell them to back off. She tries to leave but the muscular brunette stopped her, allowing the heavier brunette to push her again. She got up and again can be seen telling them to back off. As one, the four women closed in on Faith, throwing hit and kicks at random. Then suddenly, the blonde and redheaded women are set flying down the hallway as though they had been picked up by a tornado. The overweight brunette was suddenly picked up off the floor and held over Faith's head, before being tossed as well. The finale woman went to attack Faith, but Faith beat her to it with a single well place punch to the chest, sending her flying back into the wall."

"Like I said, Ruby ain't the smartest bulb," Lila said as she closed her laptop. "Faith hid in the bathroom. When we found her an hour later she was repeating, 'I'm sorry' over and over. It was clear self-defense, but with somebody who has that much power behind her punches, I had a problem on my hands. I sat her down, made it clear that if we had another incident, I would have to lock her in solitary. Seems to have worked. News spread like wild fire of Ruby's failed hit, giving Faith major street cred. Everybody is too afraid to try anything with her, and Faith hasn't even tried attack anybody. She's even managed to break up a few fights before the guards could get in there and use force."

"That doesn't sound like a murderer to me," Olivia comment quietly as she looked at the file in her lap.

"No. Faith has it in for sure, but she's been a model prisoner since then. She shows up every Monday-Friday to file my paperwork and answer my phones. She usually spends her yard time at the weights, benching more than I've seen grown men do. She sees her therapist twice a week without complaint, and I've been told that she is doing well. She's opening up, and even doing some of the exercises Doctor Basha has suggested. The rest of her time she spends either in the library or in her cell reading."

"Has she had any visitors?" Olivia asked.

"Just one. Guy by the name Angel… O'Connor, I think is his last name. He comes by once a month. She usually seems happier after she's seen him, but it's hard to tell with her. She's cocky as hell; witty as shit, and too damn smart for her own good most days. She's moody too. It's the grumpy days that make it hard to be around her. Reminds me that she's just a kid. A kid who is stuck in here for life."

"You seem close," Olivia observed.

"As close as I can get," Lila stated. "Close enough to know she doesn't have any family. So, why don't you tell me why you're really here."

Olivia chuckled, "Once a cop, always a cop."

"I see you did some research. Make me even more suspicious of why you're here."

Olivia opened the file she had on Faith and pulled out the kinship analysis results. She handed the paper to Lila, and said, "Faith doesn't know about me. I only found out a few months ago, when I had my M.E. run my DNA through the system."

"I heard about this," Lila said as she stared at the results. "Wish I had this when I was still on the force. Would have made my job a hell of lot easier." Lila handed the paper back to Olivia, with suspicion in her eyes. "Still begs the question why you're here?"

"Curiosity, I suppose. I never knew who my dad was. Maybe she did. Maybe she has the missing puzzle piece to my life, or maybe not. Perhaps I am just curious as to who she is."

"Fair enough," Lila said. "I found out my dad stepped out on my mom, and that I had a little brother when I was twenty-five. I was curious about him too." Lila picked up her phone and dialed a few numbers. "Bring Lehane to visiting room one." She hung up the phone, and then stood.

Lila quietly escorted Olivia through the jail, to the visiting rooms. "These are usually reserved for lawyer meetings, but I make an exception this one time. Yell for the guard if she doesn't take this well. The last thing we need is for her to go off the rails and hurt you."

"Got it," Olivia said, and then went into the room. She sat at the table quietly. She was nervous. Probably more nervous then she had been in a long time. The only family she had growing up was her mom, and they didn't always see eye-to-eye. She had been distant to her, and at time dismissive and uncaring. She was about to meet somebody who shared her own blood. Somebody who could shed some light on the missing part of her heritage."

After what felt like an hour, the door opened and in walked a young brunette, and Olivia found herself taking in every feature if her. Her hair hung loosely around her shoulders, long and curly. She was wearing a blue prison uniform, with the top few buttons of her shirt undone, revealing her white tank top. She was pale, with dark shadows under her eyes, as though she wasn't sleeping enough. She stood stock still as she eyed Olivia.

"Don't know if they told you, but I'm already in here for life. Really no reason to pin anything else on me," she said. Her voice was deep and had a cocky tone to it. Smart too. She instantly knew she was a cop. Olivia could see what Lila meant about her.

"I'm not here to try and bust you for anything," Olivia said. "I would like to talk to you about a few things though."

Faith stepped forward. She grabbed the chair gently and sat, folding her arms in front of her. "Don't have much of a choice. I'm here until you tell the guards to take me back. So. What does a pretty cop like you, want with a criminal like me?"

"I'm not her as a detective today," Olivia said. She had been planning this visit for over a month now, going over every word she was going to say, and every reaction she could possibly get from Faith. At that moment, not a single one of them was coming to mind. She just opened her mouth and allowed words to flow out. "My name in Olivia Benson, and I'm here because I wanted to meet my sister."

Faith remain stoic for a moment and then she let out a deep, belly rumbling laugh. "Yo, that's a good joke."

"I'm not joking," Olivia insisted, as she pushed the kinship analysis results across the table. "I had my DNA tested against those who were in the system, and yours was a paternal match to mine. I really am your sister."

Faith looked up from the results, and then slid it back over. "Look, I don't know what you thought you'd get by coming here, but I'm not big with the family types. All they do is disappoint ya."

Olivia studied Faith's body like she would a perp's. Faith was ridged, too ridged, like she was holding herself back. Making sure not to show what she was feeling. She could understand why. Cops tend to be a prisoner's worst enemy, but then again, Faith had made nice with the head of the prison. So, it must be something else.

She flipped open Faith's file and pushed it across the table. "I came to see what you knew about our father. I want to know if you are who you are because of him."

Faith's eye flicked down at the file and back up again. "Don't know. Never knew the guy. I see you did your research though. Kudos to you. Though, you should have looked a little deeper." She pushed the file back towards Olivia. "Ma never told me about him and I sure as hell didn't have him around to save me from her drunk ass. Since you're here asking question about him, I'm guessing he pulled the deadbeat dad routine with you too."

Olivia placed her hand over the file, and then looked at Faith, eyeing her closely. A sour taste overtook her senses. Faith was like her, a product of her mother's rape, and she clearly didn't know that. For a moment she paused, debating whether she wanted the responsibility of having to tell Faith that. She's done it before, but it rarely has ended well. It was a hard pill to swallow.

Faith was looking at her like she was annoyed as hell. She probably was. Olivia sure as hell was the night her mother struggled to tell her about her father. They had just had yet another fight the night before. Serena had been drunk, not that it was anything new. She was always drunk when she was home. Serena was angry with Olivia for not having the good sense to make something to eat, and Olivia was even more angry that her mother was drunk and picking a fight.

In a rare moment of lucidity, her mother had told her that her father had raped her. At first, Olivia thought she was fucking with her. Another way to hurt her, because she was hurting. Then, as she watched Serena's movements and the way her voice shook and got stuck in her throat, she realized that her mother was speaking the truth.

In that moment Olivia felt like her mother had kicked her in the stomach. Everything she had ever thought about her mother came rolling down to that one little fact. Her mother's increasing need for alcohol, the way she was always looking at her with such distain, if she was even looking at her at all. She had spent so many years wondering what she had done that was so horrible even her own mother could hate her, and in that moment, she got her answer. Her big horrible crime was being the product of the worst night of her mother's life. A constant reminder of the man who took everything away from her.

And now, she was about to do the same to sister.

"My… Our father…" she paused and took a deep breath. This had never been this hard before, but it also never involved her or a family member before either. "He raped her. Our father… he was a rapist. I never knew him because I was the result of my mother's rape. I don't know who he is because they never caught the guy."

Faith was silent. Her breathing was unsteady though, which gave her tumbling feeling away. Most wouldn't have caught that, but Olivia wasn't most people. Faith's stoic stature slowly melted showing Faith's true age. It was then that Olivia realized what Lila had meant when she said she was just a kid, a notion Olivia had been trying to ignore.

"Damn," Faith yelled suddenly. She stood kicking her chair backwards with suck force it chipped a piece of the brick wall behind her. The three guards stationed outside the room came rushing in the room circling Faith all pointing taser guns at her, who suddenly threw her arms in the air. "I'm good. It's good boys. All good. Just lost my cool for a second. Won't happen again."

The tall balding black cop holstered his taser and motioned for his comrades to do the same. "It better not Faith. You know what the Warden said. You hurt the detective and you'll spend a month in solitary."

"Yeah. I know Jimmy. I'm good," Faith replied.

"Alright Faith, just remember, I'm right outside that door," Jimmy said, before he and the other two guards slowly left the room.

Faith turned to the chair she had kicked and then growled lightly to herself. She had lost her cool and displayed just how strong she is. The chair not only chipped the wall, it also had a bent leg. "Damn, cheap metal," She growled as she went over the window where two more chairs were sitting out of the way. She pulled one over and sat back down.

"Sorry," she said. She reached into tank and pulled out a pack of smokes. "Got a light?"

Olivia shook her head, "No. Sorry."

"Damn," She said, and then went back to the door. She banged on it, making sure not to put too much force into her punches, and waited. A second later Jimmy opened the door and took a step in. He handed her a lighter, without her asking for one, and then stepped back out.

She strolled back to her seat as she lit the cigarette tucked between her lips. She took a deep drag and then sat down, setting the lighter on the table as she did. "Jimmy's the best," she declared. She took a few more drags before she looked back to Olivia again. "Make sense now," she said, and then put the cigarette in her mouth and let it rest there. "Why she hated me so much. I always knew it, but damn if anybody believed me. Always dreamed he would come rescue me. Take me to a better life, ya know. Guess that wouldn't have happened, even if he had shown up."

She took a long drag, then flicked the ass on the table next to her. "As for me being like that bastard, maybe, maybe not. I like being in control and damned a man if he tries to steal it from me. Not really into the whole without consent thing though. I could have taken Red. She was right there, her pretty little virgin self, looking and smelling damn good. Her heart speed up when she saw me. Maybe she was excited by the prospect of having my hands on her, or maybe she was terrified that I'd kill her. For some there ain't much of a distinction. I liked Red. She didn't give me the same song and dance like the rest of them. She spoke her mind and had the balls to stand up to me. Definitely earned some cred for that. I could have had my way with her like I had Xander, but I don't think I could ever be that evil. I probably would have killed her though, if the boss hadn't of stepped in and stopped me."

Faith laughed coldly. "But that's why you're here, right? You could have call and got the information you needed about good ol' daddy. I mean I never knew the guy… No. I bet you're just like B. Terrified that one day you'll become the very thing you hunt. I bet you lie awake at night, chasing your demons in the shadows on your ceiling. I bet you flew all the way cross country to see if you could use those cop skills of yours to see if I had any good in me. Hate to disappoint, sis, but this is who I am. I am a murderer. Maybe I got it from him, or maybe it was my shitty childhood. Either way, we won't ever know, cause neither of us know who the dude is."

She stamped out her smoke, and brushed away the ashes, then looked into the woman's eyes. "It was nice meeting you and all, but I think I've had enough." She stood up and went to the door. She banged three times, and then looked back at Olivia. "I hope you find what your looking for, but it ain't gonna be with me."

Jimmy stepped into the room. "Time to go, Jimmy-boy," Faith said. She tossed him the lighter back. Jimmy looked to Olivia for confirmation, who just nodded her head yes. It was clear to her, that she wasn't going to get anywhere with Faith. She saw no reason to hold her against her will.

"It's yard time," Faith said as she walked through the door, allowing the heavy door to close with a thud.

Olivia sat in the room for a few minutes before she got up and exited, allowing a guard to escort her back to the main entrance.