A/N Hi guys so this is my first ever fan fic. I just wanted to make one thing clear before the beginning of this story. This is totally AU. Also this is probably going to be a lot different to any other Whofic you have read but I hope you enjoy it all the same.

So I own nothing apart from Ari she is mine totally as for the rest thank the 1963 team that brought our favourite Doctor to the screen.

The darkness surrounded her as the door behind her was slammed shut cutting off the only light source. For a moment she just stood there letting her eyes adjust as she also tried to calm her breathing.

She didn't know why she had been taken to this place and locked up. All she knew was that they had come for her and her family and had taken them from their home. They had separated them all not allowing any of the to speak or even see each other, but she had heard her father shouting and her mother crying but worst of all she had heard her sister, her baby sister crying in fear and shouting for her parents and calling her name.

Ari was scared.

That was all she knew and that was all her body seemed to care about. As the darkness dissipated slightly as her eyes got use to it she continued to try and slow her breathing but the panic and fear within her was slowly taking over.

"If you take deep slow breaths my dear you will be fine." A voice from the darkness said causing her to scream and move back until her back was against the door she had just come through.

"Who's there?" She whispered her voice not wanting to get any louder.

"Who indeed… Don't worry, the fact of the matter is, I am to fear you more than you should fear me.

Ari frowned at that and started into the darkest corner of the room the place the voice was coming from. "I don't understand."

"No…But you will." The voice paused a moment and then the sound of chains moving accompanied a question. "What is your name?"

"Arianna." She whispered her wide eyes not blinking as she pushed herself further against the door and the chains continued to move.

"Arianna, beautiful name." The chains still continued to move and then from the darkest corner and figure rose. "I'm the Doctor, and you Arianna are here to kill me."

Silence descended on the cell as his words slowly sunk into Ari's brain. She frowned for a moment and was about to ask something when a small light turned on above their heads. It wasn't bright but it was enough to see by. Ari looked at it for a moment before she looked back at the man that had called himself Doctor.

He was looking up at the light his face smiling slightly. He was young but still a bit older than her twenty-five years. His hair was brown and messy and he was sporting a beard. His clothes where, well they where rags. They must have been a suit of some sort once but now they where ripped and covered in filth. The only thing still in tacked was his tie; it was long and blue in colour.

When he looked from the light his eyes found her and she stopped breathing. Those eyes where so much older than what they should have been. But they where also mad, and not the angry mad. Who ever this Doctor was he had been here a very long time and it had taken him to the brink of sanity.

His smile remained as he took her in. Her long black hair was a mess after being dragged out of bed and her clothes where nothing more than sleep shorts and a strappy white top.

"Always a pretty one." He said tilting his head slightly. "I've never really understood that. Why a pretty one? To make it easier? Harder? Pleasant maybe? Who knows…well they must know. Do you know?" His eyes had moved away from her blue ones as he looked about but at the last he looked back to her. "No of course you don't know. After all you just got here didn't you? Pulled from your bed by the looks of it. Mother, father taken as well…Siblings?"

She nodded not saying anything.

"Ah well that will make it easier, younger siblings I'm guessing?"

She nodded again.

"Not got much longer left then."

"Till what." She asked?

"Till you Arianna, kill me."

"Why do you keep saying that? She demanded her voice rising above a whisper for the first time

"Because that is why you are here. It is why you and your family where pulled from your beds and brought here to this place. And I am so sorry Arianna, so very very sorry."

"Why?"

"Because at the end of all this you will be forever changed."

Ari just stared at him not full understanding why he kept on about her killing or why she would be changed but he was scaring her even more than the men that had brought her here.

"Why will I have to kill you?" She had decided very quickly as she looked at him that she wanted answers. She wanted to know why her and she wanted to know where her family was.

"Because I can not do it myself now can I?" He said and she didn't know why but she laughed and he smiled.

"No I guess not. Okay, so why me? Why me pacifically?"

He smiled at that, in fact he practically beamed. "Now there is the question! Kind of like my why always the pretty ones?" His face went serious. "I don't know why you. All I know is that they would have chosen you; you would have been watched and then chosen. But the why is not something I can answer. You will have to ask them that."

The light suddenly went out and replaced by a hologram of a man in a black suit his hands clasped behind his back. "Arianna Sharp. You have been chosen for a task only you can perform. The man in this cell needs to be executed and only you can do this. You have one hour to do this before your family become involved."

The hologram disappeared and the light returned, but Ari just stared at the place the man in the black suit had just disappeared from.

"What did he mean my family will be involved?"

"Incentive." The Doctor replied as he moved back to his corner.

Just then a hatch on the door she was leaning against opened and she moved further into the room before turning around. A tray was pushed forward and inside was blade with a golden hilt. She stared at it for a moment before taking hold of the hilt and picking it up out of the tray. As she did this the tray disappeared and the hatch closed.

Ari held the hilt in her right hand as her left hand touched the blade. She tested the balance and then suddenly turned back to the Doctor. His brown eyes looked at hers and she kept hold of that stare.

"What did you mean by Always a pretty one?" She asked.

"Well you're pretty and they always have been pretty."

"Who have?"

"The others."

"What others?"

He smiled brightly. "You're good."

"What others?" She demanded.

"The others that have killed me." That answer she didn't expect. She had thought maybe others had been brought before and failed but his answer just confused her.

"But you're not dead."

"No but I have died ten times while I've been locked in this cell."

"I don't understand." She said not knowing what to make of his answer.

"No you wouldn't."

"But how is that even possible?" She questioned.

"Question…Where does your power come from?" He randomly asked.

"What? Power? What power?"

"The power that lights that." He said pointing to the light. "The power that runs your homes, your schools, your towns, where does it come from?"

"I don't know a power plant I guess."

He smiled and held out his hands the chains catching the light and she noted that they where gold in colour. "Your power plant."

She frowned for a moment still not getting it and her silence seemed to encourage him to go on. "Your people, oh your people where very very clever. In fact they where so clever they nearly destroyed this planet. Then along comes little old me, here to save the day. But it was a trap. I walked straight into the perfect trap. And ever since then they have been feeding off me, taking what is mine and using it for their own damn gain!" As he spoke his voice increased in power until he was shouting. "And now look at me! The Doctor the last of the Time Lords feeding a whole planet!"

Ari found herself back against the door as he looked at her and in only four strides he was right in front of her holding her right wrist and bringing the blade up to his chest with her still holding it.

"Arianna Sharp, you are to kill me now." She tried to pull her hand free but she kept a tight grip on her.

"No!" She said looking up into his eyes and she gasped slightly at what she saw in them. This man this weird crazy man was forgiving her.

"Ari, if you don't they will hurt and kill your family." He brought his free hand up to her face, his fingers gently brushing back her hair before his fingers gently touched her temple. "This body will die, but I will live. Trust me."

As he said to trust him, images started to flash through her mind. Different faces until she saw the one before her and a message, no not a message a plan.

Opening her eyes she smiled slightly and he smiled back.

"I knew you be the one." He whispered before her lent down and kissed her forehead, and then in one forceful movement he brought her wrist forward and she felt the blade embed itself into his chest.

Any and all critiques welcome.