Dean and Kate stopped outside Sam's motel room and looked at each other. "Dean?" Kate said quietly.
He turned to look at her. "Yeah?"
"Don't say anything you're gonna regret. We need to get through to him here, not push him away."
He nodded and pushed open the door. They saw Ruby putting things into a bag, her back to them, but Sam was nowhere to be seen. Dean pulled the knife out of his belt and ran at Ruby. She turned and went to punch him but he pushed her back into the wall and raised the knife. As he brought it down, someone grabbed his arm and stopped him. Sam. "No. Let her go." Sam warned him. "Just take it easy."
"What the hell Sam?"
"Let's just talk about this." He said calmly.
"Soon as she's dead, we can talk all you want." He said, nodding towards Ruby.
"Ruby, get out of here." She turned ans walked quickly out of the room, slamming it closed behind herself.
"She's poison Sam."
"It's not what you think Dean." Sam argued.
"Look at what she's done to you. I mean, she up and vanishes for weeks at a time, leaves you cracking out for another hit-"
"She was looking for Lilith."
"That is French for manipulating your ass ten ways from Sunday."
"You're wrong Dean."
"Sam, you're lying to yourself." He lowered his tone. "I just want you to be okay, you'd do the same for me. You know you would."
"Just listen for a second. We got a lead on Lilith, come with us." He looked between them. "We'll do this together."
"That sounds great. As long as it's you, Kate and me. Demon bitch is a deal breaker. You kiss her ass goodbye and we can go right now."
"I need her to help me kill Lilith. I know you can't wrap your head around it, but maybe one day you'll understand. I'm the only one who can do this."
"No. You don't know what you're doing Sam."
"Yes, I do."
"Then that's worse. Look at her face." He pointed at Kate. "Ruby did that to her."
"I know Dean, but-"
"You know?" Dean now sounded more pissed than ever. "You knew that she beat the hell out of her? You knew that she just left her on the side of the road? And you're still rolling with the bitch?! That's your sister Sam!" He yelled.
"I have to do this. I know you're mad but-"
"No Sam, you don't get it. There is no going back from what you're doing yourself." Sam frowned in confusion. "It's not just something that you're doing. It's what you are. It means-" Dean stopped himself.
"What?" Realisation hit his face. "No. Say it."
"It means your a monster."
Sam looked up at him with tears in his eyes and nodded. He looked over at Kate who was watching them with a look of horror on her face. He turned to Dean and punched him in the face, knocking him to the ground. Dean stumbled to his feet and punched Sam back harder. He punched him again and again before kicking him. Sam blocked one of Dean's attacks and kicked him in the stomach. He punched him, Dean falling face first into a mirror. He turned back to Sam who punched him again and grabbed his jacket, throwing him through the air and through a glass window. He stormed over to where Dean was lying and pinned him down, wrapping his hands around his neck and choking him.
Kate's eyes went wide in shock as she ran over to them, dropping to her knees and trying to pull Sam away from him. "Sam! What the hell are you doing?! Stop it!" She half yelled, half pleaded with him.
He released his grip on Dean's neck and got to his feet, looking down at them both coldly. "You don't know me. You never did, and you never will."
Dean coughed slightly and tried to catch his breath. "You walk out that door.. don't you ever come back." He warned.
Giving them one last look, he shook his head and walked out of the door. Dean made an attempt to grab his sister's arm as she stood up but she'd already crossed the room and ran after Sam. "Hey!" He stopped and turned slowly to face her, not saying anything. "You really gonna do this Sam?"
"Yes. I am."
Her face softened for a moment, a pleading look in her eyes. "Please Sam, I'm begging you. Don't.. Just, don't do it."
"I have to."
She shook her head and looked towards the floor. When she looked back to him, her face was cold. "You realise we have to stop you right?"
He grabbed her by the shoulders and shoved her hard into the wall, holding her there. The face she looked into was not her brother. It was cold and empty. "You can't stop me Kate. Neither of you can. I'm stronger."
She shook her head at him. "No. You're just a junkie with an addiction." He glared at her before pushing off her and taking off down the hallway, disappearing from sight. She opened her mouth to call after him but decided against it.
When she walked back into the room, she realised how much damage the two of them had done fighting. Everything breakable in the room was broken. Glass was smashed, chairs knocked over and blood on the floor. Dean was now sitting up, leaning against one of the beds. Kate crossed the room and dropped down next to him on the floor, both staring blankly ahead for a few minutes. "What now?" She asked him quietly.
"Now nothing." He said flatly. "We're done."
"Dean, I know you're pissed. And I'm not making apologies for what he's done, but he's still our-"
"Blood?" He cut her off. "He's our blood? Is that what you were going to say?"
"He's our brother."
"Kate, we tried to help him, but look what happened." He said, gesturing to the broken glass at their feet.
"So we'll try again." He shook his head at her. "Dean, if we don't do something we're gonna lose him for good."
"No. We gotta face the facts here Kate. Sam never wanted to be a part of this family. He hated this life. Hell, he ran way to stanford the first chance he got. Now it's like déjà vu all over again." He sighed. "Well, I am sick and tired of chasing him. Screw him, he can do what he wants. We've already lost him."
"You don't mean that."
"Yes, I do. Sam's gone. I'm not even sure if he's still our brother anymore.. If he ever was."
"Dean-"
"No Kate. I told him, 'you walk out that door, don't come back' and he walked out anyway. That was his choice. You went after him and he ditched you too."
"He's not himself right now, but he's still Sam. He's still the same kid you practically raised, the same kid that we grew up with, hunted with. The same kid you sold your soul and went to hell for. You can't tell me that means nothing to you."
Dean looked up at her, tears glistening in his eyes. He reached out and wiped a tear from her cheek with his thumb. "I'm sorry." He whispered, standing up and leaving the room. She let the tears fall down her cheeks before standing up and leaving the room, heading down to the reception desk to check them into another room.
When she heard Dean come back from wherever he'd been, it was almost half four. He didn't bother getting changed, just dropped straight onto his bed in his clothes and slept. When he woke, it was half eight. Kate was sitting at the table on her laptop with a coffee. He groaned as he sat up and went to sit across from her at the table, picking up some painkillers on his way. "Hungover Dean?" She asked him casually, not taking her eyes from the screen.
He picked up a bottle of whiskey and took a drink with the painkillers. "Now why would you go and say a silly thing like that huh?" He muttered sarcastically. She looked up at him and shook her head, reaching over the table and taking the whiskey from his hands. Before he had a chance to argue, she pushed her coffee over the table to him. He opened his mouth to argue but decided against it. "Thanks." He mumbled. "Look, I'm sorry for bailing on you last night."
"Don't worry about it." She mumbled. "It's-" She stopped at the sound of fluttering wings, looking up as Castiel appeared in the middle of the room, looking alarmed. Dean and Kate looked between each other before standing to face him. "Cas? What's up?" She asked him, sounding worried.
"Sam. You must stop him."
Dean scoffed. "Yeah, so you keep saying."
"No. I mean you have to stop him from killing Lilith."
They both stared at him for a minute, utterly confused. "I'm sorry, what?" Dean asked. "Lilith's breaking the seals, Cas, you've done nothing but tell us we have to kill her for weeks now."
"Lilith's not just breaking the seals. She is the final seal."
Dean frowned. "Meaning what exactly?"
"She dies, Lucifer's free."
"You have got to be kidding me." He muttered.
"So you see, you must find Sam immediately."
Dean was silent. Honestly, the last thing he wanted to do right now was see Sam. Castiel looked from him to Kate who nodded. "Yeah, we understand Cas." She told him, looking up at Dean. "We need to go. I know you're mad Dean but we need to stop him. Lucifer gets out and we're all dead."
"Yeah, I know." He said slowly. "Where will they be?"
"St. Mary's convent. You must hurry. The angel's will kill me if they find out that I've told you. I'll hold them off but I can only do that for so long.. I'm rebelling for you, don't make it for nothing." He touched their heads, sending them to the convent. They heard a scream from downstairs and looked at each other, breaking in a run towards the basement..