Tony looks at me like I have 9 heads.

"Ok, someone tell me whats going on right now!" He demands. The Doctor takes the lead this time.

"Anna and I arent from your world. We are a race called the Time Lords. That thing over there is called a Dalek and it will kill you with no guilt in its body." He says.
Tony nods rapidly as if he knows what he is talking about.
"But the real question is why are they here? What do they want?" I say.
"Doctor!" A robotic voic says. A beam of light shoots down from the sky catching all 4 of is in its wake and lifts us from the ground. Before long, we are in a ship with no light and the smell of fuel and metal wafts through the air.
"Anna!" The Doctor shouts.
"I'm ok! Tony, Martha, you all good?"

"I'm good!" Tony shouts back. Then silence.
"Martha!" Three voices ring out into the darkness. Nothing. A light turns on and the sound of static comes through. Then another light. Suddenly the room is filled with a dull florescent light. The screen springs to life with a terrified, tied up Martha being held hostage by about 4 Daleks.
"Martha! Let her go! She hasn't done anything to you!" I say.
"She is merely an insurance policy." A Dalek says. Martha tries to scream but the gag on her mouth muffles it.
"Why do you need her?" The Doctor asks.
"You must sacrifice one for her." It says. The screen goes dark.
"What did he mean sacrifice one for her?" Tony says.
"He means, one of us has to die if we want her back." The Doctor says.
Thousands of things rush through mu brain and my hearts beat rapidly. We have to save Martha. But someone has to die. But why?
Tony cant die, he has too much to live for. That just leaves me and my brother. Me. The Doctor. Thoughts rush through my head weighing the options we have. The screen turns on again and this time, Martha isn't there.
"What do you want!" Tony yells in a panicked voice.
"A power source." The Dalek says. And then it hits me. The energy one absorbs from the TARDIS. Thats what they need. The Doctor can tell what I'm thinking. He knows what needs to be done.
"Anna! No!"
But its too late. Before he can do anything, I spot a door. He has to live, and theres no other option. Before another thought can enter my brain, I'm running to the door. Running to my death.