Meredith Voice Over:

Life is tricky, there are so many bumps in the road that you have to overcome just to get through every day life, and just when you think that everything is finally normal something always seems to happen to rock it all out of balance all over again.

Thunder claps and there is a big bolt of lighting, no rain. Allison is wearing a short black skirt with high black boots and a burgundy v-neck low cut top. She stands tall because she is confident, too confident for her own good. She takes a deep breath as she walks towards the door of the hospital. She walks in and takes a seat as she composes herself. She has a very serious/very nervous look on her face and just staring forward at all times as if she's in a trance. George sees her from across the room and is intrigued; he walks over to her and sits down in the chair next to her. "Hello, uh, is there something I can do for you? I mean, you don't seem to look like there is anything wrong but I am a doctor so if you need my help, I am your man….I am babbling, I'm sorry," George says, feeling more and more like an idiot as each word leaves his lips.

"Yeah…babbling…I am looking for Addison." Allison says, barely even paying attention to George, she is too lost in her thoughts to pay attention to anything but herself, that's always her way anyway.

"Oh you're looking for Addison. Follow me." They stand up and Allison follows George to the nurse's station. "You can wait here for her. So I…" Dr. Bailey sees George from down the hallway and stops in her tracks.

Bailey screams from down the hall to George, "O'MALLEY! Stick your tongue back in your head and let's get moving."

"Yes, Dr. Bailey, coming!" George scurries away and Allison leans on the desk waiting for Addison. Addison comes out of a room and spots Allison and starts to walk in the other direction as she rolls her eyes. Allison walks fast to catch up.

"Oh come on Addison, don't walk away. You haven't forgiven me yet?" she says as she dodges doctors and nurses who step in her way from catching up with Addison.

Addison quickly turns around to face Allison. "I have nothing to say to you. You need to go back home. What's your problem? What made you think to come all the way out here when you know it will cause problems?" Allison turns to the side to show that she is pregnant.

"I need your help, Addy," Allison says as she puts her hands over her belly.

Meredith, Izzie, George, and Cristina are following Dr. Bailey through the hospital to go to their next patient. George says in a whisper, "I saw a girl, she's pretty, and I think she knows Addison."

"Then she can't be bringing good…It's not a good sign. We should probably stay away, sorry George," Meredith replies.

Cristina adds, "Yeah seriously, George, no need to get involved with other people's drama."

"How do you know there will be drama?" he asks. Meredith, Izzie, and Cristina just look at him. Like he really needs to ask that question. She can't be bringing anything but trouble with her from New York, it's what they do. They don't even need to use words before George understands, "Good point."

Bailey speaks up as they walk into a patient's room, "Ok who can tell me what's going on with this patient?"

Cristina steps forward to present, "Jeffery Miles, 25, has a tumor behind his right ear that showed up on a CT. Patient was in a car crash and smashed the whole right side of his head. The tumor is growing rapidly and is becoming dangerous to his health, Dr. Shepherd will be operating."

Bailey continues, "As will Dr. Sloan. Yang, you will scrub in with Dr. Shepherd. George you will be in the PIT and Stephens will be shadowing you today. Grey, you will be with Dr. Montgomery. Karev, Dr. Sloan has requested you today."

Alex sounding disappointed, "Of course he has." He pauses to take in what was just said to him, "Wait, did you just say surgery?" He smiles really big, finally an opportunity to show Sloan what he knows.

Addison and Allison are in Addison's office. Allison's head is hanging low and Addison is standing in the doorway as Allison is sitting down. "I have not forgiven you so don't even think that the fact that I am talking to you right now means I forgive you because I Do Not," Addison says, she can't even look at her sister she is so frustrated with her.

Allison snickers, "Get over yourself, I am here only to make mom happy. I did not want to fly across the country to get yelled at by you."

"Let's just cut to the chase, whose is it?"

"That's part of the reason why I am here," Allison pauses, "I don't know. Well, I am unsure. It's between two people. Can you get the paternity test done if I bring you the guys?"

The more Allison talks, the more annoyed Addison gets with her, "Who are they, Allison?"

Allison is really trying to avoid answering the question at all costs, she is still not ready to face her sister's wrath, "You're not going to like my answer."

Impatiently Addison says, "Just tell me."

Allison mumbles, "It's either Derek or Mark."

Addison opens the door of the room points outwards. She yells, "Get out of my hospital and out of my life, I have had enough of you."

Allison just walks out of the room and passes Meredith, George, Izzie, and Cristina who were walking by. George follows her with his eyes. Addison storms out of the room, slams the door and storms down the hall.

Meredith, Cristina, George, and Izzie all say at the same time, "Drama."

Derek is getting off the elevator while Meredith waits for him. Meredith stops him. "I knew I would find you here. I am going to describe someone to you and let's see if you know who I am describing." Meredith says as she leans on the wall.

Derek smiles as he says, "Ooo I love guessing games. I am really good at them."

Unfazed by his attempt at cuteness or humor or whatever he was trying to do replies, "I am sure you are. Ok here it goes. Female, short-ish, dark hair, green eyes…"

Derek interrupts as his smile turns into a frown. "Stop right there, I know who it is."

"Wow, you are good."

Derek is now almost in a daze. She is the last person he would have expected to see ever again. Could she really be back in Seattle? "Yeah…I'll talk to you later, I have to go." Derek starts walking away quickly.

Meredith is puzzled at his reaction and a little annoyed that he would just walk away like that, "Aren't you going to tell me who it is?"

Derek turns around as he's walking and says, "Addison's sister." Derek turns the corner and Meredith just stands there with her mouth open.

"Just what I expected, more drama." Meredith turns around and walks back to meet up with Addison, Cristina goes to find Derek while George and Izzie go to the pit.

Meredith walks into the room where Addison is sitting at a desk with her hand on her head with a blank stare. She is determined to get to the bottom of whatever is going on.

Addison notices Meredith has joined her and says, "Congratulations, Dr. Grey, today you are not the person I dislike most that is in this hospital."

Meredith nervously smiles, "Well I appreciate that, Addison, uh, Dr. Montgomery. What did your sister do that is so terrible?"

Addison very cryptically says, "Allison knew better, you didn't."

Meredith is now totally confused and almost regrets even bothering finding out, "O-K. Wait a minute, Addison and Allison? Seriously?"

"Seriously."

Addison and Meredith both break out into laughter. As she's laughing Addison manages to blurt out, "It's so corny isn't it?"

"Yeah it kind of is," Meredith agrees as she tries to compose herself. They continue to laugh as Derek walks in.

Derek is stunned to see his girlfriend and ex-wife together, let alone laughing with each other, "I obviously have stepped into the wrong dimension." Addison and Meredith both smile.

Izzie and George are waiting in the pit for ambulances; it's a pretty slow day. There was not much going on. George is sitting on a gurney and Izzie is sitting on a stool facing him. "You can't have a thing for Addison's sister, George, you know that right?" Izzie says.

George looks up at her and says, "I know, but there is just something about her that I can't get out of my head. Don't tell Meredith, ok?" By this point Cristina had walked over to them.

"We can't tell Meredith what?" Cristina asks.

"That he has a crush on Addison's sister," Izzie reveals without second though. George looks quickly to her in anger.

"Oh George," Cristina shakes her head in disgust, "Well talk to you kids later." Cristina walks off to find Burke. She sees him by the operating board talking to a woman. She ducks behind a corner to see what they are doing. They are both laughing. She gets a mean scowl on her face, she is not happy that Burke is laughing with another woman. He sees her from down the hall. Who is that woman with him and why are they so close together?

Burke sees Cristina and yells out to her, "Cristina!" Cristina reluctantly walks over to them. "This is my best friend from college, Skylar."

Not realizing she started to think out loud Cristina snaps, "Is that even a real name?"

"CRISTINA!" Burke yells.

"Oh I'm sorry, was that out loud?"

"It's ok, Prest," Skylar says as she puts her hand on his arm, Cristina follows her hand with her eyes.

Cristina needs to get out of there before she winds up in a fist fight in the middle of the hospital, "WELL! I have to get going back to a patient. It was nice meeting you."

Cristina walks down the hallway and disappears into the elevator. Elevator stops and Cristina gets off. She walks outside and walks over to a lunch table where Izzie, George, and Meredith are already sitting. "What kind of name is Skylar anyway?" she says as she slams her tray down onto the table and takes a seat.

"And hello to you too." George replies.

"Why would a best friend be touching him?" Cristina continues, totally ignoring George's snarky comment.

George and Izzie both look to each other for answers as to what Cristina is even talking about, both of them don't have a clue. Izzie replies, "Ok, you've lost me."

"Burke's best friend is in town. She's beautiful. She touched him. They were laughing. HER NAME IS SKYLAR!" Cristina explains.

Izzie and George both say at the same time, "Drama." Meredith hasn't eaten a thing. The whole table notices but no one says a word. They just keep looking at each other and back at Meredith.

Meredith finally speaks up, "She's only here to visit, right?"

"Who?" Izzie asks.

"I am assuming she's talking about George's girlfriend," Cristina jokes.

"Whoa! Not my girlfriend!" George says defensively.

"Yeah, Addison's sister," Meredith confirms.

Cristina, Izzie and George all say, "Drama."

"Yeah, I hate drama," Meredith says as she slams down her uneaten sandwich.

Derek walks over to the table and says, "It's time for Mr. Miles's surgery now, Dr. Yang."

Before getting up Cristina whispers to Meredith, "I'll try to get some information."

Derek and Cristina walk off to get ready for surgery. Mark and Alex are already scrubbed in and ready to go. The operating room is quiet. No one is saying a word. Derek is just going through the motions as Mark and Alex look on until it is their turn to operate.

Cristina finally finds the opportunity to say something, "Excuse me Dr. Shepherd; I know it's not any of my business…"

Derek interrupts her before she can finish her sentence, "No it's not."

"No of course not but Meredith is my friend. I just…It's just that there is drama taking place and I want to know what it is…I don't want her to get hurt again," Cristina replies.

Very sternly Derek says, "Dr. Yang, this is not the time or the place to discuss this, it's complicated…like this surgery. I have a man's skull flap open, a brain exposed, and you're worried about my ex-wife's slutty sister."

"Don't talk about her that way," Mark yells. Cristina's eyes go wide, she is very surprised that Mark would stick up for anybody but himself.

"Wow, Mark, I didn't realize you still had a heart. It figures you would defend her," Derek snaps.

"Just because you're mad at her for something doesn't mean you can call her names like that," Mark says as he tries to stay calm, he does not want to get into an argument in the middle of the surgery.

Derek is now enjoying the fact that he is getting under Mark's skin. "I can and will talk about her any way I please."

"Just get back to it so I can work my magic," Mark says, back to his cocky ways. Derek removes the tumor, he and Cristina step away from the table. Mark and Alex take over. Derek and Cristina leave the room and get cleaned up.

As he scrubs his hands with soap Derek turns to Cristina and says in a low tone, "I don't know why she's here."

"Excuse me?"

"Addison's sister, I don't know why she's here."

"Oh, ok then." Derek walks out of the room. Cristina goes up into the gallery to watch the rest of the surgery. The surgery is done and Cristina walks to the elevator. Alex is already standing up against the back of the elevator.

"Sloan totally kicked McDr…Shepherd's ass today." Alex says with a huge smile on his face.

"I didn't know it was a competition…and it's not like he's my guy anyway."

"He still won." Alex just loves rubbing it in her face that he had the better attending in that mini argument that presented itself in the OR.

"Shut up, evil spawn, I am not in the mood."

Derek is looking all over the hospital for Addison. He finally spots her and pulls her by the arm into a room. He cuts right to the chase, "Why is she here?"

"It's not my job to tell you, find her and ask her yourself," she says coldly, he can tell there is something wrong.

"You know, don't you? She told you about what happened between us?" That could be the only explanation why Addison looks so hurt and betrayed.

She sighs, "I wish I didn't, Derek. Remember when I told you that I caught Mark with another woman? Well, it was Allison…and now this…I really need you to leave me alone right now." Derek has a surprised and yet an almost hurt look on his face.

"Really? I am so sorry, Addison." He didn't know what else to say. There really was not much to say at this point. The damage has been done.

"You have no idea." Addison and Derek walk away from each other. Allison is standing outside facing away from the hospital she starts to walk away as Mark comes up behind her and gets right up close to her, she stops, talks into her ear.

"What are you doing here?" Mark asks.

Without turning around to face him Allison says sarcastically, "It's nice to see you too, Mark."

"You're going to cause trouble," he says in lower voice.

She finally turns around to face him, "Oh, like you're one to talk."

Mark smiles and says, "It's good to see you, I've missed you." He grabs her hand and kisses it. She pulls her hand out of his and away from his kiss.

Sounding annoyed, "You didn't have to leave, that was your choice, remember? It seems to be the theme in this thing we call a family."

Allison and Mark continue to talk while Meredith, Izzie, Cristina, and George who are inside the hospital watching Allison and Mark from afar.

"What do you think is going on?" Meredith asks.

"She's talking to McSteamy," Izzie replies. Meredith just looks at Izzie dumbfounded that she would even answer that way.

"Yeah, I got that, Izzie. Something is not right," Meredith exclaims.

"When are things ever right around here?" Cristina says.

Mark walks passed them and goes one way and Allison shortly follows. Mark goes out of sight just as Derek walks in. Allison sees him and walks towards him just the same time the group starts walking towards him as well. Derek stares into her eyes and puts his arms on each side of her arms.

"Hi, Derek," Allison says while looking right into his eyes.

He replies back in the same tone and never breaking eye contact, "Hi, Allison."

Meredith speaks up feeling ignored, almost invisible, "Derek, aren't you going to introduce us?"

Allison does ignore Meredith and continues, "Derek, where is Addison?"

Jokingly he says, "Avoiding you, probably." He smiles, "You look good.

Allison smiles back at him but it's more condescending than actual happiness. "I know you don't mean that. I know how you feel about me so you don't have to act like you still like me. I have not come here to be friends again, Derek. I am not like you or Addison or even Mark chasing after some miracle that everything is going to go back to normal just because I showed up with my bright smiling face."

"I am trying to be civil here."

Allison sees right through it, "How noble of you. Those baby blues get you nowhere with me, Derek, so let's just stop kidding ourselves."

"I am sorry that I…took advantage."

"I don't want to hear your apology, that is not what I am back here for," she says as she starts to get impatient with him.

He too is starting to get annoyed at the attitude she is pulling with him, "So why are you here?"

Meredith gets angry and walks over to the group (George, Cristina, and Izzie) who are sitting on chairs some distance away. Mark walks back into the room and his eyes meet with Allison's and they stare at each other. Derek turns around to see Mark standing there and he just turns back around to see Addison walking into the room as she stops dead in her tracks. The group stays quiet as if they are trying not to be seen or heard.

Allison sees that Mark he rejoined them and says, "Now that we're all here, there is something we need to discuss."

"Holy McDrama, Batman," Cristina says in a low voice.

"I really hate drama," Meredith replies.

"Tell me about it," Cristina says as they all wait for what happens next.