I'm following the show on what happened and adding some of my own ideas in, so just bare with me. Enjoy!

(Caroline's P.O.V)

I'm stuck in the science lab with Barbie Klaus and My Werewolf boyfriend in pain and most likely dying. I have my hands on his back trying to soothe some of his pain if any way possible.I look up as i hear Klaus and see him walk through the door.

"The verdict's in, the original witch says the doppleganger should be dead." He walks in, holding a small test tube with Elena's blood in it.

"Does that mean we can kill her?" Rebekah chimes in, walking behind me.

"No, i'm fairly certain it means the opposite." Klaus says looking at her.

"What?" She says as she grabs me by the shoulders and gets me away from Tyler.

"Call it a hunch, Elena's blood, drink it." He leans down and holds the tube out for Tyler to take.

"No, no no no no, Tyler don't." I say and struggle to get free from Rekecah's grips.

"If he doesn't feed, he'll die anyway love. Consider this an experiment." Klaus says as Tyler is trying to fight his pain still and then looks at Klaus. "It's okay." He says. Tyler takes the blood. "There we go." Klaus says as he's leaning back up straight.

Tyler drinks the blood and spits some of it back out and then drops to the floor in pain, holding his just and I start to freak out and struggle even harder to get Rebekah to let me go. I need to help Tyler. I see that Klaus watches with a smile or smirk, I can't tell which because of the tears in my eyes. Tyler turns over and grabs his head into his hands and screams. He then leans his head to the ground and inhumanly growls at Klaus while looking at him. I look at Tyler in shock.

"Now that's a good sign." Klaus says with a slight smile on his face.