The boy sat on the table. He was about 12, with big blue eyes, a blue cap, blue jumper and brown shorts. He must really like blue.

The man, possibly his father, stood behind him. He was tall, with a large top hat, orange jumper and long brown coat. It wasn't made to match, but he seemed to make it look good.

Marta entered the room, and looked at the pale boy and the man. She knew there were other members in their party. A brunette girl, and a man, about early twenties, that looked like an older version of the sick boy.

"So what seems to be the matter?" She asks the man in the top hat.

"Well, it may just be a chest infection, but we just want to be sure."

The boy coughed.

"Does it hurt to cough?" Marta asked gently. The boy nodded.

"What's your name?" She asks him.

"Luke,"

She smiles, "Well, Luke, I just need to listen to your chest and take a few x-rays. It won't hurt."

He nods.

"Can I ask you to just lift up your top…?"

Luke lifts up his top and Marta notices he is shaking a little. She puts the stethoscope to his chest and listens.

There is a normal heartbeat.

She moves the stethoscope to the other side of his chest. A worthless and not needed procedure, but ever since she travelled with the doctor, she made it a habit.

She inhaled sharply, and listened to his chest again.

"Is something wrong?" The man asks. Marta notices she is shaking a little too.

"What? Oh nothing. We just need to take a few x-rays."

The man nods, and leaves the room so she can take the x-rays.

"Okay, Luke, they are going to take a wee while to develop, but it's probably just a chest infection. Just get some rest, and drinks lots and you will be fine."

The boy nods, pulls down his top and leaves the room. The man returns, and she repeats the same thing.

"Before you leave, may I have your address?"

"Why is that?" The man asks, raising an eyebrow.

"Just in case it is something serious, and we need to send somebody 'round."

"Ok…."

The man writes his address down on a piece of paper. He tips his top hat and leaves the room. She looks through the window and watches the four of the, the sick boy, top-hatted man, older version on the boy, and the girl, leave.

She shakes her head,

"It can't be,"

She leaves the room, and goes to where the x-rays are usually developed.

"Oh my…."

Marta looks at the x-rays in disbelief.

Luke had two hearts.

Marta, shaking, scrambles for her phone. She goes to her contacts list, and looks at the number she hasn't phoned in a while.

She hits call.
"Doctor, please pick up," She pleads.

Meanwhile

The Doctor, Amy and Rory were surrounded.

"Now would be a good time for a plan, Doctor!" Amy hissed.

"Okay, well-" The Doctor begins. He is interrupted by his phone ringing.

"Oops, sorry, on minute," He digs in his pocket for his phone.

"A fine time to get a phone call!" Amy yells.

"Yeah, I know, hold on," The Doctor pulls out his phone, accidently pressing reject.

"Oh no…" The phone rings again. He answers, ignoring the angry looks on Rory and Amy's face.

"Hello? Oh, hello Marta! How are you?"

"Yeah, hello, listen are you busy?"

The Doctor looks around, considering. The hundreds upon hundreds of zombie's stare back. It was going to be a tough one to get out of.

"The usual," He decides, "What's up?"
"Its about this boy…"

"I was a boy once," The Doctor declares.

"Yeah whatever, anyway, he has-"

"Hold on Marta, your braking up,"

"No I am not Doctor, listen to me!"

"Marta!"

"Doctor he has-"

"Marta I really need to go-"
"He has two hearts Doctor!"

"Oh."