A/N: This is my very first Fringe fic. You can consider this to be my reaction to last night's episode.

"It's all for the mission," Olivia Dunham thought as she sent that text message to Peter. "It's all for the mission," she thought as Peter knocked on the door. "It's all for the mission," she repeated again as she answered it. "It's," she grabbed him by the jacket collar and pulled him to the wall. "All for," they were kissing each other roughly now. She let out a moan as he kissed her neck. "The," Olivia pulled off her shirt and pants and was in nothing now, but her underwear. "Mission," she pushed him onto the bed.

Olivia snapped awake and checked on Peter. He was still fast asleep. She breathed a sigh of relief and slowly crept out of his arms. If this did not help maintain her cover then nothing would. Feeling thirsty Olivia pulled her underwear back on and entered the kitchen. She poured herself a glass of water and started to chug the entire thing down when she stopped. She put down the almost empty glass and examined it. She almost thought for a second that she saw herself with red hair in the reflection.

"I'm letting my fear get to me," she thought sitting down on the couch. "Keep it together Liv. You can do this. Just remember the mission." She looked back at her bedroom. Peter hadn't made a sound. "Remember the mission." She buried her face in her hands. "Screw the mission!" She regretted what she did with Peter even before they had done anything. She regretted sending that text message to him, but knew she couldn't send him away once he got to the place. She doesn't have any feelings for Peter and yet she's forced to in order to keep up the façade. She felt like the shape shifters at times and yet the sad reality of that was even the shifters, the part organic part machine shifters, developed actual feelings for the people on this side. She bore no feelings for anyone here. It was all just a mission to her. She can't relate to this Olivia's niece. She thought seeing her sister again would be a dream come true, but instead she's only worried about slipping up on some part of her family history or something else that had only been shared between the two sisters. This Olivia couldn't see her as her sister. That's because she wasn't her sister. They may share the same genetics and the same everything else, but they aren't the same.

Don't even get her started on Walter. While he's a lot more fun to be around than her Walter he scares her the most; even more than Peter if that's possible. He's bound to notice something. Even the tiniest little detail could make him realize that something is up. He may be nuttier than a fruitcake, but he's smarter than practically everyone in her own universe and that's saying something given how more advanced they are than this side. Out of everything on this side the only person who evenly remotely reminded her of someone on her side was Broyles. He still had the same no-nonsense attitude that her Broyles had. Yet even here he seemed to be a tad bit nicer than over there in her world. He probably knows his agents better than anyone. Has he noticed anything? Olivia felt a wave of sadness start to overtake her. She felt a tear start to roll down her cheek. She let it fall. For once she didn't want to hide the sadness she felt; being alone in this foreign universe. Nothing she felt was real. There was nobody that she could truly talk to. No Lincoln, no Charlie, no Frank. No anybody. This wasn't her life; wasn't her world. Every day was just another mission and a fight to make sure she didn't slip up in any fashion.

In truth Olivia knows she already has. No matter how good of a mimic you think you are you can never truly replace the original. And who's to say that she herself is nothing more than a copy? Who's to say that this universe didn't come first and the one that she calls home is nothing, but the shadow of this one? Olivia felt sick to her stomach as she started to wonder if her existence was only possible because the Olivia Dunham of this world came first. What did that make her? Olivia ran to the bathroom and threw up into the toilet, but the feeling in the pit of her stomach wouldn't go away. She felt her body tremble all over and felt like she was going to break down any minute.

"Why me! ?" Olivia screamed in her head. "Why did she have to be the one to come here! ? Why couldn't Walter have sent someone else! ? There was more than enough shape shifters!" The phone started to ring and she heard Peter starting to stir awake. "I'll get it Peter. Go back to sleep," she told him.

"Kay," he mumbled into his pillow and was out like a light again. Olivia got to her feet and walked to the phone. She took a deep breath to get back her composure and answered the phone.

"Hello," she said as if none of the negative feelings she just experienced had happened.

"So tell me. How is he in bed?" Olivia almost dropped the phone.

"Where are you?" She asked in a trembling voice.

"Go to the bathroom," the person on the other end ordered. Olivia felt her feet doing as the voice said. She stepped inside and nearly dropped her phone.

"Hey," the Olivia Dunham of this dimension greeted. She hung up the phone and put it down on the bathroom counter on her end. Alt. Olivia stared at the mirror and placed her hand up against it.

"This isn't a movie," Olivia said. "You aren't going to suddenly fall back into your dimension just by touching the mirror."

"How?" Alt. Olivia asked.

"Am I doing this? I have a gift; the power to see cracks to the other side; gateways so to speak. Luckily for you this is only a means of me to communicate to the other side."

"How long have you?" Alt. Olivia began to ask.

"How long have I remembered my real memories? Long enough to give this side a taste of its own medicine. I've discovered quite a few things during my time on this side. Things Walternate wouldn't want my side to know."

"Walternate?" Alt. Olivia asked confused.

"Way to distinguish between the two Walters," Olivia answered.

"Olivia? Are you talking to someone?" Alt. Olivia's boyfriend, Frank asked on the other end.

"No," Olivia lied as he walked into the bathroom shirtless and put his arms around Olivia's waist. "Please. Not tonight. I'm really tired," she said as he kissed her neck. Alt. Olivia looked in horror earning her a smirk from Olivia.

"Well you know where I'll be if you change your mind," he said and left the bathroom. Olivia walked over to the bathroom door and slowly shut it. She then walked back to the mirror.

"You can relax. We haven't done anything. Doesn't look like I can say the same thing for you though," Olivia said dropping her cool demeanor for a second and voicing just how upset she was. "We came close a few times," she said going back to her calm voice, "but even I wouldn't stoop as low as sleeping with someone thinking it will quell their fears about me being different. I'm sorry. Is this upsetting you?" She asked noticing Alt. Olivia's tight grip on the counter. "Funny. Normally it's the evil twin that torments the good one. Never the other way around," she laughed.

"Shut up," Alt. Olivia seethed. "I'm not evil. You're the ones that fired the first shot in the war."

"And we're going to fire the last shot too. No one on your team truly knows the truth about what happened that night and Walternate still thinks I'm his slave. As far as they all know I am their Olivia Dunham, whose unusual behavior is a result of being overstressed and overworked. What's your excuse? Eventually you're going to mess up. That is if you haven't already my little doppelganger."Alt. Olivia felt a rage boiling inside her. How dare this Olivia treat her as if she was a pale imitation? "I'll admit Charlie was a little suspicious at first, but dear, sweet Lincoln managed to calm is fears about me not being 'me' like I said when I was first captured. He's actually a pretty fun guy to be around even if he is still a little burned."

"I'll kill you. I swear to God. I'll kill you," Alt. Olivia promised.

"I'd love to see you try," Olivia said and held up her open palm. A flame emitted from it. Alt. Olivia looked shocked. "A parting gift from my friend, who blew herself up to help me," she said in anger. "Don't ask me how I got her power," she said closing her palm. "Now I want you to listen and listen well. You may look like me, sound like me, heck you may even have the exact same genetic structure as me. But you are NOT me. Do you understand?" She whispered conveying her quiet fury.

"Olivia," Frank called again.

"Coming baby," Olivia said walking to the bathroom door. She opened it, gave Alt. Olivia one last piercing glance, and then turned out the lights. For a minute all Alt. Olivia could see on her side was darkness and then her own reflection returned. She slumped up against the wall and sank to the floor. She brought her knees close to her chest and silently cried.

A/N: Let me know what you think of my first Fringe Fic. Like I said this is a one-shot, but I may be persuaded to continue if enough people like the story. See ya!