A/N: Okay…so this happens during the season finale, right after the Demon pins Sam and Dean against the wall. If anyone has any questions…feel free to ask…okay? This is my first ever attempt at a fic…let's see how it goes…
Disclaimer: If I owned it, why would I be writing fanfiction instead of a script?
"Let him go, or I swear to God—"
"What? What are you and God going to do about it? See, as far as I'm concerned, this is justice." John walked over to where Dean was pinned to the wall. "Know that little exorcism of yours? That was my daughter. The one in the alley. That was my boy. You understand?"
"You've got to be kidding me!"
"What? You think you're the only one that can have a family? How would you feel if I killed your family? Oh, that's right. I already did. Still, two wrongs don't make a right."
Then something unexpected happened. His brother started making sounds that Sam could only describe as guttural grunts and moans, but they were much too rhythmic and emphatic to be meaningless.
His father—the demon wearing his father—recoiled with something akin to confusion written on his face, before one of outrage replaced it.
"How do you know that language, boy?!"
Without missing a beat, Dean countered, "Don't speak out of your league, boy."
Now both Sam and the Demon were confused. This was when Dean decided that enough was enough. He easily broke free from the Demon's restraints. Everything seemed to stop for a moment before the Demon went flying across the room. Sam looked at his brother and realized that this wasn't the Dean he knew…
A/N: So this idea just hit and I had to write it down. I'm not sure if anyone will like this. Just let me know if you want me to continue…