The train came out of the tunnel, and the Doctor opened his eyes. For a few moments he gazed around, trying to remember where he was and how he got there. He came up empty handed - the last thing he could remember was talking to Clara in the TARDIS. He was about to stand up, to try to see if Clara was around here anywhere, before his eyes landed on a lady sitting across from him.

She had blonde hair that was tied up in a ponytail, although if it was let down the Doctor was sure that it would only reach her shoulders at most. She also had a side fringe, hiding one of her blue eyes from sight. She was looking at him with a look of mixed concern and confusion, it took the Doctor mere moments to put a not all that real smile on his face.

"Ah, hello!" He greeted the lady, "You wouldn't be able to tell me how I got here by any chance, would you...?"

The lady frowned, looking even more confused and concerned, if that was possible, "Don't you remember?" She seemed to realise what a silly question that was and continued slowly, "We walked together. From your house to the train station. Remember now...?"

The Doctors smile fell slightly, and he felt even more confused. His house? He didn't have a house. Unless this lady meant the TARDIS, that was. But then why would they take a train anywhere? Yes, it was a rather enjoyable experience, but there was simply no need for it. He shook his head in response to her question, "'Fraid not." he knew that he'd have to be careful here, "Let's just say, hypothetically, I've lost all of my memories since about, ohhh, ten years ago...? What would you tell me to sum up everything that's happened to me in the past ten years?"

A suspicious look crossed the lady's face, "I'd tell you that you are obviously joking, and to stop it because explaining things to you would be rather tedious."

She seemed proud with her response, the Doctor noted. He'd have to try a different tactic. "Alright, alright." He fell silent for a few moments, looking out the window at the passing fields before looking back at the lady again, "I seem to have forgotten where we're going..."

She huffed out a sigh, the concern and confusion that had previously been in her gaze was now completely gone. She looked rather annoyed instead, "We're going to school, idiot. What is wrong with you today? First you forget how you got here, then you ask me such a strange and random question, then you forget where we're even going!" She paused, "Did Ko keep you up last night? I told you it was bad idea to adopt him, especially with courses like ours!"

The Doctor blinked, giving the lady a blank look, "Uh... what...?" School? Ko? Courses? What was she talking about? "Ah... Yes. That's what it is." He looked out of the window again. He could see a large city in the distance. Was that where they were heading? Most likely. He couldn't see any other settlements. He looked back up at the lady, "Could you... Excuse me for a moment...?"

He didn't wait for a response before leaning his seat and walking down the narrow gap to the end of the carriage. As he walked he scanned the seats for Clara, but he couldn't see the familiar brunette anywhere. Oh well. Clara could look after herself, after all.

He'd noticed some time ago that he was wearing completely different clothes to what he had been wearing before - these clothes seemed much more student-y than his current ones. He was wearing a red jacket, with a light blue T-Shirt underneath, a pair of jeans and a pair of converse to boot. He was also fairly sure that he was wearing a hat of some kind, not that he could see it.

He glanced to the side and saw a bathroom. Deciding to find out what hat he was wearing without having to take it off, he veered to his right, pressing a small button and patiently waiting for the doors to slide open. When he got inside he looked at himself in the mirror. Except... That wasn't him. Unless he'd regenerated, that was.

For a start, he had blonde hair. He hadn't had blonde hair since his sixth body! He also had chocolate brown eyes, and his face was much softer than it had been before, reminding him of his fifth self. His chin was also small, nearly average sized. He imagined that Clara would be disappointed about that. That was a good point... Clara... How would she recognise him like this? He hadn't explained regeneration to her yet, it might take a while for her to believe that it was him. How had he even regenerated, anyway? And what was going on? These questions the Doctor had no-

A/N: Sorry for the shortness of this! Future chapters should be longer. Much longer. Anyways, this Fanfic is for a Fanfic Challenge I entered on The TARDIS forum over on . The challenge was to put the Doctor in a situation that scared you, from real life, TV, movies, musicals, books, whatever. I choose Source Code, 'cos that movie always used to freak me out.

This isn't going to follow the main plot of Source Code, the Doctor is a different character to Colter, so they'll react to things much differently. Plus, I've added a couple extra twists. One of them I'm definitely going to add into this, the other I'm not too sure. Classic!Who fans may notice it, but I doubt they will .

Anyways, I hope that vanguard1219 will enjoy this, if he/she reads it.

Also, this is my first time writing fanfic for the Doctor and Clara, so they will most likely seem OOC. Sorry about that. If you have any constructive criticism please tell me, I'd love to improve. However, it has to be constructive, if anyone just flames I won't be very happy :(

Anyways, that's all for now. Please stick around, I intend to have more chapters out shortly!