Dean and Kate ran down some stairs and through a dark stone hallway, coming to a stop when they reached an open door. Sam was standing in front of Lilith, Ruby right behind him. She turned to face them and smirked as she raised her arm, the door slamming closed in their faces. They looked between each other before they began kicking and banging against the door, trying to get it open.

Sam faced Lilith. The demon he had spent weeks, no months, looking for. The demon that had sent his brother to hell. The demon who was about to spring Lucifer from his cage. He'd lost his brother. He'd lost his sister. He wasn't stupid. He didn't expect them to forgive him for this, but he knew that even though the demon blood and the working with a demon thing might not have been the best way to go about it, he was doing something good here.

He raised his hand towards her and closed his eyes. He could hear his heart pounding in his head. He could hear voices shouting, screaming his name. Voices that sounded like Dean and Kate. He slowly put his arm down, trying to work out if the voices were in his head or not, and turned towards the door. His eyes fell to Ruby who was screaming at him. He couldn't hear anything other than the thumping in his head and the voices desperately shouting his name.

There was laughter behind him. He turned back to Lilith. "You turned yourself into a freak Sam. A monster. And now you're not gonna bite? I'm sorry but that's honestly adorable."

He once again raised his hand to her and began to pull the demon from her body. His head was burning. He opened his eyes to see her glowing and flickering from the inside, her body beginning to go limp as the demon was pulled from it. There was a crash behind him as Dean and Kate stumbled through the doors.

Kate grabbed Ruby by the hair and held her arms tight behind her back. She pulled her around to face Dean as he plunged the knife through her chest and twisted it, a look of pure hatred on his face. Her head dropped to the side before Kate let go of her, throwing the body to the floor. There was a scream behind them as Lilith took the opportunity to leave the body that she had been possessing.

"No!" Sam shouted, raising his arm in an attempt to pull her back to the body.

"Sam, leave her!" Dean ordered him.

"Are you insane?! No!"

"She's the final seal Sam! She dies and he's free. Let her go!" Dean yelled at him, shoving Sam's arm back to his side. Sam looked between them slowly, a look of shock and horror plastered over his face. A bright light shined through the windows as the room began to shake. "Angels." Dean muttered. "We have to go. Now." He yelled, turning towards the door.

Kate looked around at Sam who was still staring at Lilith's host's body on the ground. "Come on, we gotta go!" She yelled, grabbing his hand and pulling him to the door. They ran out of the building and practically jumped into the Impala. Dean wasted no time in slamming his foot on the pedal and driving full speed out of town.

They drove in a tense silence. Kate and Dean in the front and Sam in the back. Kate looked tentatively over at Dean whose eyes were fully focused on the road, refusing to look away. His jaw was clenched and his knuckles were white from the death grip he had on the steering wheel. "Guys.. I'm sorry." Sam spoke up from the back seat. "I'm so sorry."

"Don't say anything." Dean muttered, no emotion in his voice.

"But-"

"It's okay Sam. We stopped it in time. It's over." He said, his tone ending the conversation.

Dean drove for a few hours before pulling into a motel. Kate walked into the small room first, dumping her bag on the floor and dropping into one of the chairs at the table. She watched her brothers cautiously, as if she was waiting for the fists to start flying again. Dean sat down at the table across from her and rested his face in his hands, letting out a deep sigh. "I'm gonna take a shower." Sam said quietly, walking to the bathroom and closing the door softly behind himself.

"Dean.." Kate said quietly.

He completely ignored her for a couple of minutes before looking up at her and shaking his head. "What are we supposed to do now?" He asked flatly. "I'm not dealing with him and his freaking demon blood addiction."

She sighed as he stood up. "Dean, where are you going?"

"I need a drink." She shook her head. "Are you coming?"

"Nah, I'm gonna grab some sleep." She muttered, standing up and pulling off her jacket, her back to him. Dean sighed and pulled her around to face him, sighing as the tears fell down her cheeks. He took a step towards her and held her in a tight hug as she cried silently against his shoulder. He softly kissed her head before she pulled back to smile at him. "You should go."

"Kate, I-"

"Seriously, I just wanna sleep. You need a drink."

"Call me if you need anything." He squeezed her shoulder before making his way to the door and leaving the room.

When Sam left the bathroom Kate was passed out in one of the beds and Dean was gone, he presumed to a bar. He jumped slightly at a sound behind him, turning quickly to see Castiel. "Cas?"

"Hello Sam." He said simply. "I'm glad to see that your siblings reached you in time."

"Yeah. Look Cas, I'm sorry."

"You have no need to apologise to me Sam." He raised his hand and placed it on Sam's head. "You're fine now, all traces of the blood are removed from your system."

"Thanks Cas."

"It would be wise to stay away from working with demons in the future Sam." He offered him a slight smile before vanishing again. Sam sat down heavily and pulled out his phone, smiling slightly at the picture of himself and his siblings pulling stupid faces on the front. He sighed and shoved it back into his pocket. The only thing that he could do now was try and put their broken relationship back together.

Sam was the first to wake up the next morning, he went out to get the three of them coffees and came back to find both Dean and Kate awake. Kate was sitting on one of the beds flicking through the tv channels while Dean was rummaging through his bag. "Hey." He said quietly, not sure on whether he should expect an answer.

"Hey." The both muttered in response, neither looking up from what they were doing. He handed them both their coffee and sat down, not missing the look that they shot each other.

"You alright Sam?" Kate asked him casually.

"Yeah, I'm fine."

She nodded. "Good."

Dean looked around at him. "You sure? Not jonesing for another hit of bitch blood or something?" He asked. Sam could tell by his tone that he was still angry.

"No. Cas came round last night, he cleared me up. For good." He didn't miss the look of relief wash over Dean's face for a second before he went back to looking for whatever in his bag. "Dean-" He started, quickly being cut off by his brother.

"Sam. It's okay. You don't have to say anything."

Sam looked down at the floor. "Well, that's good. Because what can I even say? I'm sorry? I screwed up? Doesn't really do it justice, you know?" Dean remained silent. "Look, there's nothing I can do or say to ever make this right-"

Dean raised his voice in frustration. "So why do you keep bringing it up?! I mean-" He took a breath and lowered his voice. "You know what, just forget it."

"No, what is it? You obviously have something to say, so what is it?"

"I tried Sammy, I mean I really tried. But I'm not gonna keep pretending like everything's alright. Because it's not. And it's never going to be.. You chose a demon over your own family."

"I know that Dean. And you're right, you guys warned me about Ruby, the demon blood, but I didn't listen."

"You're damn right you didn't listen!" He yelled. "You were stupid, and- I don't even know Sam."

Sam looked down and shook his head. "I would give anything to take it all back."

"I know you would. I'm just.. I'm having a hard time forgiving and forgetting here, you know?"

Sam nodded. None of what Dean was saying actually surprised him. If he was being honest, he'd expected a lot more. He looked up at him as he threw the bag to the floor and grabbed his jacket. "Where are you going?" Kate asked him.

"Out." He muttered, crossing the room and walking out of the door. Sam watched out of the window as Dean past his car, walked over the parking lot and down the street. He turned away from the window and glanced at his sister, he opened his mouth to say something but was cut off by Kate.

"Don't apologise Sam." She stood up and sat down at the table with him. "I'm not gonna lie okay? I'm pretty pissed, yeah. And I'm not for one second saying that demon blood was the best way to go about it but.. I know you thought that you were doing the right thing. And I know that if you'd have known, you wouldn't have done it." Sam nodded. "Point is Sam, we're still family. All we've got is each other."

"He's never going to forgive me for this Kate." He whispered, tears in his eyes.

"He will. He just needs time to get it through his head." She said softly. "But things will get better, trust me."

He gave her a weak smile and nodded. "Yeah."

Dean came back a couple of hours later, looking slowly around the room. "Where's Kate?" He asked Sam, noticing she was gone from the room.

"She went to get her phone from the car."

"Oh, I never saw her." He muttered, looking out of the window at where his car was parked. He dropped into the chair opposite Sam's and looked at him. "Listen Sammy, we've both said some stuff to each other lately that we shouldn't have said. And I'm sorry for that. I'm sorry things went so far."

"Yeah. Me too."

"We've been through so much crap, but we always come out of it okay. This time's no different."

Sam nodded. He looked up as Kate walked into the room, looking between them nervously as she closed the door. "We all okay?" She asked, walking towards them slowly.

Dean smiled. "Yeah, we're all good. Fresh start right?" He said, looking over at Sam.

"Yeah. Fresh start." He agreed.

He knew it wouldn't be easy, there were still some trust issues between the three of them for sure. But they'd work on them, maybe they'd never fully be gone but he knew that they could at least work on them. They'd be okay. They had each other's backs again and it felt good to know that. He knew they'd be fine. Because they always were..

THE END.

Massivethank you to all of you who favorited, followed, reviewed and for reading! Hope you enjoyed it. :-) If you liked it, the sequel is Kate Winchester, Part Two :) Maybe check it out?