the impossible doppelgänger (wholock)

I

"Thank you Sherlock. Your help has been extremely appreciated." Sherlock nodded.
"I knew you needed something as soon as you walked in the door. Your-"
"Stop with the deducting, Sherl." I heard behind me. The voice was unfamiliar, and I had never heard Sherlock receive such a nickname. The man (the man?!) came up behind Sherlock and hugged him.
"Whoa. Sherl. Sherl, who is this?"
Sherlock rolled his eyes at me, but acknowledged the man with a pat on the head. Sherlock turned around, heading for what I knew was the kitchen.
"It's John. John is my-"
"Boyfriend." John said.
Sherlock smiled.
"Good for you two,then."
Sherlock reached for the fridge and pulled out a bag of...human?... eyeballs. John rolled his eyes at Sherlock.
"Not to interrupt any investigations Sherlock, but keep in mind the police force is chasing me." John sat up straight, eyes as big as bowling balls.
"What?!"
"Yes John. He's being chased for...burglary. But he's not guilty. It's obvious to me, however, not you."
"Why thanks, Sherl. I'll be in the bedroom. Thanks for making me feel bloody stupid."
"John-" The door slammed.
"He'll be over it soon." I said.
"Hopefully."
------
The once near-silent television exploded with noise; the proof of an emergency alert.
"What the-" I ran to the telly, listening to the announcement.
"Welcome to BBC News Network. Breaking news this evening as Matt Smith, a convict suspected of burglary, is on the run. He was last seen in Cardiff, walking out of a blue police box. Here is a picture of the man. If any information is known about this man, please dial 999." I gaped at the screen as a picture of me appeared on the screen, running out of a blue box. Thing is; it wasn't me.
"Sherlock! You might want to some see this!"
Sherlock ran to the television as the warning played again.
"Interesting." Sherlock said. "They said you're called... The Doctor?" I furrowed my brow in confusion.
"No... I've never been called that."
A knock on the door startled both of us.
"Great. The police are here."
"No," Sherlock said. "I think I know who it is."
Sherlock ran down the steps, quickly opening the door. A man, exactly like me, ran inside, out of breath. He was wearing a long tan jacket with a bowtie. He pulled out a... screwdriver?... with as green light at the end. He shook it out, and panels came out of it.
"Alright," he said. "this is where things get confusing."
------
We all had gathered around the kitchen table, my look a like across from me. Sherlock was going on about some German words and questioning who I had learned was the true Doctor.
"What's your name?" Sherlock demanded.
"Doctor." The man replied.
"Doctor who?" The man grinned.
"The true question."
Sherlock glared at him.
"What is your name."
"The Doctor" just stared right back at him.
"It's just 'The Doctor.' That's it. That's my name."
Sherlock pushed me over into the chair next to me and sat across from the Doctor.
"Now listen, Doctor. This man has been in very much trouble because of you. What did you steal?"
The Doctor glared at him.
"Sherlock." he said. "You should know."
Sherlock quizzically looked all over the man. He stepped back and rubbed his eyes, then went back to him.
"You, uhm. You're wearing a cologne. A cologne only sold in Athens. Not Athens right now, Athens A.D 37. Your coat has traces of grass, but it smells like apple. Not in any existence. Right now. You've been spoken of online many times. Your police box is outdated; most likely a bad choice in camouflage 50 years ago. You have a certain glow to your skin. Just regenerated. You're a timelord. Correct?"
I stood, surprised my jaw wasn't touching the floor. Time Lord, Time Lord, what was a Time Lord? And what did Sherlock mean by "right now" when talking about Apple scented grass? Regenerated...? I was so confused.
"Yes.You're correct. Congratulations."
I lost it. I snapped.
"What does all this mean!" I screamed. "You both are so understanding and I'm over here trying to comprehend it all. Time Lord? Regenerate? Apple grass? Care to inform me?"
Sherlock and the Doctor ignored me. They kept talking.
"So does he have... the two hearts? If he is my doppelgänger?"
Sherlock shrugged. "There's only one way to find out." He walked back to his bedroom, talked it seemed for a while with John, and came back holding a stethoscope. His hair was tousled. The Doctor chuckled. I smirked at him.
"Shut up both of you. Doctor. Check him."
The Doctor came over to me, holding the metal medial instrument. He shrugged.
"Hello." He said. "I'm the Doctor. I'm a Time Lord, which is from the planet Gallifrey. I have two hearts. You might be my doppelgänger. Yes. I am alien." I just nodded curtly. All I needed was explanation. He checked my heart in the normal spot, but then moved to the right. His eyes grew big. "Intereesting." he mumbled.
"What?" Sherlock yelled.
"Well, I'm not very sure, but he may or may not have one more vital organ than necessary."
And with that, I fainted.
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