Post 4x10 Kol uses Caroline to stop Klaus from searching for the cure.
Caroline was walking out of the Grill with Elena and Bonnie when Kol materialized in front of them. The three of them jumped back in fright as Kol stalked towards them with a devilish grin.
"Hello darlings, enjoying your evening?"
"Run!" screamed Elena. They scattered, all going different directions. Caroline blurred away as fast as she could and almost made home when she felt a tug on her coat collar and flew through the air. She landed flat on her back on someone's lawn, gasping for breath. Kol loomed above her with a wicked grin.
He yanked her from the ground, forcing her to stand on her feet. Caroline was wobbling; clenching her ribs realizing one was broken. Kol grabbed her by the face and stared into her eyes. Caroline tried to stop him but he was too strong.
Kol's eyes dilated, compulsion taking reign over Caroline's mind. "You are going to run north, until you can run no further. You are not allowed to feed and you are to speak to no one."
Caroline felt her insides die at Kol's command. The onslaught of tears down her cheeks couldn't be stopped. He was sentencing her to death and no one would know what happened to her. She tried to fight her feet from moving forward, her body trembling as the urge to run grew. Kol shrugged his shoulders, "Sorry darling but I can't let Silas rise. He'll kill us all. If your death won't get my brother to stop then I'll have to kill him."
Caroline knew that her face frozen in horror, Klaus wouldn't come looking for her not after her part in losing his hybrids. The fight to keep her body in one place was lost and she felt herself being launched forward, blurring out of the town.
It was torture, four days later and Caroline felt like she was going to die. The burning in her throat constantly stung her, her fangs elongated all the time because she was so thirsty. Her tears had dried up after day two and most of her thoughts now were only of blood. Her clothes were tattered and torn from falling in dizzy spells against rocks and trees. She had no idea where she was but figured she had to be in Canada somewhere. It didn't matter though there weren't people around for miles and snow was beginning to fall.
Flames of agony danced across her body, and Caroline collapsed against the mud bank of the stream she just crossed. She was too delirious and weak to move anymore. In her delirium she began to drift over her memories of her beloved Mystic Falls and all her friends and one original hybrid. For the first time in two days she began to cry, the salty liquid searing her eyes.
A moment of clarity sobered Caroline. Kol had never said that she couldn't take off her ring. Caroline looked down at her daylight ring, she could just end all the torture. The pain wouldn't even be that bad not after what she felt for the past four days. No one had come to get her, which meant that Kol had probably gotten to Elena and Bonnie too. They were always picked before Caroline, she was never the one.
Shaking Caroline attempted to take off the ring, but could not find the energy to move any further. Sinking into the mud, her eyes fluttered before finally closing. But the fight wasn't gone in her, her mind was still fighting tooth and nail to move, she just couldn't open her eyes any longer.
When a gust of wind rolled her over and warm blood was shoved down her throat, Caroline thought she had died. The euphoric liquid kept rushing down her throat breathing life back into her mummified body. Slowly Caroline felt she could open the iron bars of her eyelids. Cracking them open she recognized the very hybrid she had thought about for the past four days.
It was Klaus with a look of dare she say it, fear. Meeting her eyes, the fear disappeared and was replaced with steely determination. He was shoving blood bags down her throat as fast she could drink them. Caroline didn't care what had happened to Kol or why it hadn't taken Klaus so long to get her. All that mattered was of all the people who said they cared for her; he was the only one who came.