Dean had told Sam everything that happened. He could feel his body, red and sweaty. His thoughts had just kept rushing ever since he saw the figure in the mirror. He didn't know what it was. Sam looked at him worried.

"Shape shifter." Sam suggested.

"God, I hope not." Dean replied. "It wouldn't make sense though; shape shifters can't appear in mirrors." Dean added. Sam looked like he agreed. "There is one thing I didn't tell you though Sam." Dean started. "When the Impala drove by and I said I thought I saw someone I knew, it was…" Sam stared at him. "It was me Sammy." Dean whispered.

"I'm worried Dean." Sam had said.

Dean had drifted into a deep sleep, his thoughts were flowing numerously. He saw himself kissing Jo in the backseat of the Impala, and they both looked happy. Then, Dean saw Sam, his brother looked happy, without a pain on his face. Dean felt himself relieved at the sight. Then Dean was flushed out from those scenes, he was going to a cold place.

He hit bottom, splashing into a puddle of liquid silver, the air bit him with a icy chill. His skin coated with goose bumps, he crossed his arms to warm himself. Dean tried to get to his feet while his teeth chattered, but an invisible force pulled at his head forcing it down towards the puddle bringing him face to face with his eerie reflection.

Dean began to feel fear for the first time in a long time; he had never felt so hopelessly empty than at that moment. The face grinned cheek to cheek, and it laughed a bit. Dean wanted to yell, but he was frozen in fear. His reflection had two faces split over a perpendicular at the nose. One was his normal guise, but the other stared him down with depressed eyes. Its features were white with sickness, and its skin hung from its face loosely, and sleepless. Dean wanted to break free, when it screamed!

Dean woke cold, and in a pool of his own sweat, and Sam was over him. "Dean, wake up. Are you alright? You were having a nightmare." Sam said hugging his brother.

"Sammy, it was in my dream." Dean squeaked weakly. "It was a ghost of myself, with two faces. One of them was barely living.." Dean explained wiping his brow.

"You were thrashing in bed." Sam said. "I thought something might be wrong, and I didn't want you to be alone so I stayed awake." Sam told him.

"You've been awake this whole time Sam?" Dean asked, feeling like a burden to his younger brother.

"Yeah, I've been trying to figure out what took your car and I think I know."

"What?"

"I think we're dealing with a doppelganger." Sam said.

"Shit, I should have known." Dean said looking out the window, now sitting against the wall.

"Yeah, doppelgangers are basically evil twins. They come as warnings, letting you know you're going to die. Doppelgangers have no reflection and often cause mischief after you've been warned, going on to ruin their others life. It's also said they give bad luck and usually mean death is soon and eminent." Sam explained.

"Damn, what about the mirror?" Dean asked.

"Well, once someone has seen their Doppleganger, they are doomed to be haunted by them until it's over.."

"I'm not going to die Sammy." Dean muttered, sensing his brother's worry. "I'll always be here to protect you, it's not your job to…"

"Protect you?" Sam asked, but Dean was silently watching the clouds drift across the navy sky. "Considering your dream, Dean." Dean looked like he was tuning in again. "I read Abraham Lincoln supposedly saw his Dopplganger haunting him in mirrors, it had two faces and one was white, symbolizing he wouldn't survive his second term."

"Guess it was right." Dean said.

"Dean, you're not going to die!" Sam said, "We're going to stop this thing no matter what. We've gone to far to die to this!"

"It's not the Doppelganger I'm worried about, but two other things. One, what created this thing, they don't appear to everyone. Two, what's going to kill me?" Dean said turning to Sam with his gaze.

"Dean…"