Authors Note: Okay, I thought I would just try this theory and see where it goes! Please, R and R!

She had arrived at the Seattle Grace Hospital early that morning; Derek had asked her to come to Seattle to do a consult on a quintuplet case that was coming in later on in the week, he knew that she liked to come in and figure out all of the background information she could ahead of time prior to them coming in to eliminate the majority of problems that could occur in surgery. She had wondered why the hospital was very quiet, hell, even the patient rooms were vacant; now that she was standing on the bridge staring down the barrel of a gun.

She now knew why.

"Are you sure you don't want a drink?" The man offered her a metal flask, knowing his gun wasn't going to be lowered anytime soon, she took the flask from him and sniffed it; "Vodka, nice stuff." He gasped as she proceeded to pour the contents of the flask onto the floor.

"Hey!" He yelled.

"Okay, listen, you are going to have to make a choice." She told him, hands on her hips and an eyebrow raised, "SWAT is going to come flooding in her momentarily and they won't kill you. They are going to arrest you and take you to jail where you will rot in a cell until your body decomposes; now, if you shoot yourself, then you are free and you can spend the rest of eternity with your wife."

"Y-You know my Allison?" He said, the gun wavered in his hand but still remained pointed at her head. It was quite obvious that he was drunk; his eyes were bloodshot and he smelt so strongly like alcohol that he was standing a few feet in front of her and it stung her eyes from there. She had to be honest with herself in that moment, she was scared shitless, but her friends worked at this hospital and she didn't know if they were still in here; this man was a threat to their lives and she would gladly give her life to protect them if it came down to it.

"No, no...I didn't know your wife personally." She admitted, looking down at the ground. "Actually, when she was here; someone very close to me was the doctor who treated her."

"You," he growled, "Are friends with Derek Shepherd?"

"You see, here is the thing, Mister Clark; I've been thinking. You don't want to kill Derek, do you? I mean, given he did take your wife away from you, you want to make him feel the same pain that you felt when he gave the order to unplug her from life support."

"Yes, I do." His eyes narrowed as he took the safety off of his gun, "I will not ask you again...Where is Derek Shepherd?"

"You didn't let me finish. You do have a third option, you see."

"And what is that?"

"If you kill Derek, you just take him out of his misery and he won't feel any pain. It's the easy way out, however, if you want him to suffer; even steven, he took your wife from you...You should take his wife from him."

"He doesn't have a wife."

"Yes, he does. My name is Doctor Addison Montgomery-Shepherd," She paused, you can to this Addison...It's the only way you can protect them...Him, "I am his wife."

ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK ADDEK

"Is everybody out of the hospital yet?" Derek asked Miranda as they stood by the SWAT team's 'command center'. "They are evacuating the Pediatrics floor as we speak; every other wing has been cleared." Miranda told him.

Derek felt kind of bad for Addison; he had asked her to come to Seattle to consult on a quintuplet case that was coming in at the end of the week just to have a shooter reek havoc in his hospital on the day of her arrival? He knew the sole reason he invited her down to Seattle wasn't just because he needed her to consult on a patient, but it was also because he missed her; Derek had broken up with Meredith a while ago because he realized something that blew his mind.

All along he thought that he was going for the 'Anti-Addison'.

But, in truth, it was the exact opposite.

The only reason that he was trying to find somebody else was because he was still madly in love with Addison and it took being with Meredith for him to realize that; Meredith hated Christmas and juju. Meredith didn't wear corsets or lace like Addison did. All in all, Meredith was exactly like a little girl who wore 'Hello Kitty' bras with matching underwear.

Derek froze in place when he thought about Addison, where was she? He frantically looked through the crowd grid-by-grid just to come up unsuccessful when he couldn't spot her crimson-red hair in the crowd. "Miranda," he said slowly to get her attention as he picked through the crowd one more time, "Where is Addison?"

"Last I saw her she was waiting for you in your office, said that you two needed to talk?"

Derek's heart dropped when she told him that, the color left his face when he thought of her alone in the hospital, they weren't divorced yet; that was what she most likely wanted to talk about, why he hadn't given the papers to his lawyer yet. Addison had left two weeks ago for Los Angeles and he had agreed to hand in the papers to his lawyer and finalize the divorce when she left, but he didn't, the sole reason why he broke up with Meredith was simple; he wanted his wife back.

He never signed the papers.

He was going to go after her.

To fight for Addison.

``Oh my god!`` someone yelled as chatter broke out through the growing crowd in front of him, wondering what all the screaming and commotion was about, Derek rounded the corner and looked up to where all the bystanders were pointing. He recognized the shooter right off the bat, it was Gary Clark, the man who was angry at Derek for giving the order to stop working on his wife because she signed a DNR that he had no choice but to respect. But that wasn`t the thing that scared him the most about the situation, in Gary Clark`s tight grasp with a gun pointed at her side was Addison; Derek watched as she pressed her hand against the glass in front of her and looked down at Derek.

Derek shook his head, desperately hoping that she understand that he was telling her not to do it. Not to risk her life to save his 'I'm sorry' she mouthed to him as tears streamed down her face.

"Derek," Callie's voice came as she tried to pull him away and out of the crowd so that he couldn't watch, "we have to go. You don't want to watch this."

"Addison, no!" He let out a blood-curling scream as a proud grin crossed Gary's face which made Derek cringe out of disgust as he once again took the safety off of his gun and pulled the trigger.

One shot.

Derek dropped to his knees at the sound, watching as Addison's body dropped lifelessly to the ground leaving a bloody handprint smear on the glass; Derek couldn't take his gaze off of the window overlooking the bridge as SWAT flooded the bridge.

Two shots.

Gary Clark quickly joined Addison on the ground.

Without thinking, Derek got up from his knees and ran inside the hospital, not thinking about anybody else around him; he was focused on Addison, he had to get to Addison. He knew that Callie was right at his heels, that was why she was one of his best friends here, because no matter what she would back him up. "I'm sorry sir, you can't come in here!" An officer blocked Derek off from setting foot onto the bridge, he could see Addison slumped against the railing, blood quickly pooling underneath her body.

"She's my wife!" He cried, pushing his way past the officer, he ran to Addison and dropped to his knees beside her. Derek took Addison into his arms and held her, "D-D-Derek?" Her voice came weakly, he looked down at her through tearful eyes.

"Yes, I'm here. I'm here." He soothed her as he secured his hands on her wound, trying his best to stop the bleeding, "Torres, I need a medic over here!"He yelled out before turning his attention back to Addison whose breathing kept getting worse and worse. He could tell that she was getting tired just by the way that her eyes slowly drooped close, he had to keep her awake, she had to stay alive; "You stay awake, you hear me? You don't fall asleep on me."

"Der, I-I can't f-feel my legs." She said quietly, her voice even weaker than it was before. His head snapped down and his gaze met hers, "What did you say?"

"I-I can't feel m-my l-legs." Was the last thing that Addison said before her eyes shut and her body went limp, Derek cried over his wife as the Paramedics arrived on the scene with the stretcher, they told him that they were going to bring her to Mercy West Hospital for the time being; Callie came and held Derek back as they took Addison out of his arms and placed her on the stretcher before wheeling her back down the hallway towards the elevator.

"Please don't take her," Derek sobbed, "Please don't take her."

Authors Note: It was just my little twist on the Gary Clark shooting. What did you think? REVIEW PLEASE!