Dean slowly managed to drift off to sleep, his sister still lying beside him. Once she heard Dean's breathing even out and was sure that he was asleep, she stepped out of the small hospital room and closed the door. She took a deep breath and leaned against the wall. "Cas.. I need some help." She whispered, fighting back the tears that threatened to fall again. "Please."
Within a couple of seconds, he was standing beside her. "What do you need?"
"Stay with Dean. I don't want him to be on his own when he wakes up."
He tilted his head to the side. "Where are you going?"
"I need to talk to Sam." She answered quietly.
Castiel nodded. "I shall be here when you get back." He said, turning to the room. He stopped and looked around at her. "Kate?"
"Yeah?"
"Remember, Sam's not himself right now. Make sure you're ready for what you might see there." He said to her, walking into the room and closing the door behind himself.
Kate took a breath as she turned the corner to the street of the motel. She stopped across the road when she saw Ruby walk up to the door and knock, Sam came to the door and let her inside. Kate crossed the street and walked towards the room, glancing inside as she passed the window. She looked inside to see Ruby sitting over Sam with a knife at her arm, pulling the blade over it she drew blood. Her eyes went wide with horror as Sam grabbed Ruby's arm and began to drink the blood straight from it.
She stood there for a couple of minutes, unable to think or even breath, tears forming in her eyes from not blinking. She felt sick to her stomach at the thought of Sam drinking blood, especially from a demon. She slowly backed away before turning and breaking into a run, not stopping for about ten minutes. Releasing a long breath she slowed into a walk and entered a bar. There was no explaining this one to Dean, she couldn't.
Dean blinked open his eyes to see Castiel sitting in the chair beside his bed. "Cas?"
"Hello Dean." He responded simply.
"Whatever it is, no." He said harshly, shifting to sit up. "Hold on, where's Kate?" He asked, noticing that she was no longer in the room.
"I believe she's gone to find your brother."
"What?"
"Maybe she's finally about to find out what we've wanted to know for a long time now."
Dean chose not to get into that discussion with him again. "So what are you doing here? Shouldn't you have gone with her?"
"She asked me to stay with you. And I came to warn you."
"Warn me about what?"
"Your brother. You need to stop him."
Dean frowned. "Stop him from what?"
"Using his powers. He's headed down a dark path Dean. And he's only getting stronger."
"How?"
"I don't know. But he can kill."
Dean's eyebrows shot up. "Kill?"
"Yes. He killed Alistair. You need to stop him Dean, before he goes any further."
Dean nodded. "I'm gonna call her." He picked up his phone from the table and dialed his sister's number.
"Dean?" She answered.
"Where are you?"
"At the motel, are you okay?"
Dean rolled his eyes. "Why do you sound like you're in a bar?"
"Dean.."
"What did you find out Kate?" She didn't answer him. "Kate? You there?"
"Yeah, I'm heading back there now."
"You sure you're okay?"
"I'll see you in a few minutes okay?" With that, she hung up.
Dean turned to Cas. "Oh she definitely found out something, and it doesn't sound good." The two of them sat in silence until Kate came back. She slowly walked through the door and closed it behind herself, turning and resting her forehead against it. "Kate?" Dean said softly. "What happened?"
"I.. He.." She shook her head, not being able to bring herself to say it.
"C'mere." He said gently. She crossed the room and sat down on the end of her bed. Dean took hold of her hand and looked her straight in the face. "Kate, whatever you saw, we need to know."
"He's.. He's drinking her blood." She said, so quiet that she barely heard herself.
"He's what?" Dean asked, not sure he'd heard her right.
"He's drinking Ruby's blood. I think."
"You think?"
"Well yeah, that's what it looked like but.. he couldn't have been right?" She turned to Castiel. "Why would he even do that?"
"That's what's making him so strong. He must have been comsuming it for a while now. It's what gives him his demonic powers. So the more he drinks.."
"The stronger he gets." Concluded Dean. The three of them looked at each other. "Well not for much longer."
When Kate and Dean arrived back to the motel room the next morning, it was to find Sam sitting reading alone. "Dean, hey. Are you alright?" He asked them as they walked in.
"Yeah, I'm good." He said flatly. He crossed the room and stood in front of Sam, Kate hanging back and sitting on the bed closest to the door. "We need to talk Sam."
Sam raised his eyebrows. "About?"
"About you. And your powers."
Sam narrowed his eyes at him. "You think I'll do it don't you? You think I'll go dark side."
"Yes, I do. I mean the way you've been acting lately. The things you've been doing." Sam looked up at him, his eyes wide. "Oh, I know. How you ripped Alistair apart like it was nothing. Cas told me, alright?"
"What else did he tell you?"
"Nothing that I don't already know. That you've been using your psychic crap, and you've been getting stronger. And now we know how."
"It's not what you think."
"Then what is it Sam? Huh? 'Cause I'm at a total loss." He shook his head at him. "Is it true?"
"Is what true?"
"The demon blood Sam, is that how you're doing it?" Sam looked down at the floor. "Sam, tell me you're not drinking demon blood." Dean's voice was almost pleading with him to say no.
"Dean I.." He didn't know what to say to him. "Look, I get you're angry, take a swing or whatever-"
"I'm not gonna take a swing." Dean answered him blankly.
"Then scream, do something."
"I'm not mad, Sam."
Sam raised an eyebrow. "Come on, you're not mad?"
"Nope."
"Right. Look, at least let me explain myself."
"Don't. I don't care."
"You don't care?"
"What do you want me to say, that I'm disappointed? Yeah, I am. But mostly, I'm just tired." Dean now spoke with no emotion in his voice. "I'm just done." He shook his head and turned away from him, walking out of the room and closing the door softly behind himself.
Sam turned his attention to Kate. She sat staring at the floor in front of her. "Kate.." She moved her eyes towards him. She looked angry and hurt. "Let me explain."
"No." She whispered, her voice sounded defeated.
"What?"
"I don't want you to explain it Sam. I'm scared of what you might say."
He moved to sit on the bed beside her but she stood up and walked towards the window. "Kate, you don't understand. It's not what you think-"
"Don't." She cut him off. "I saw you Sam.. I was here."
He frowned in confusion. "What are you talking about?"
"I watched you drink her blood Sam." She told him flatly.
His eyes went wide. "It's not how it looks Kate."
"How can you even say that?" She yelled, turning away from him.
He walked up behind her, now angry himself. "Don't take that tone with me Kate. You said yourself, you could understand this."
She turned to him and slapped him in the face. "Don't you dare. Don't you dare twist my words around to make yourself feel like you are not two-faced, lying junkie Sam. Because you are." Sam just stared at her, unable to think of a way to answer her. She sighed and lowered her voice. "You have to stop this Sam, it's going to kill you."
"I know you don't understand, but I need to do this."
She looked him straight in the face. "All my life, I've followed you around. You and Dean. I did everything that either of you ever asked of me, without question. I trusted you. No matter what came your mouth, no matter how stupid, I trusted you. I'd have done anything-" She stopped and took a breath. "I'm asking you now Sam, trust me. What you're doing is wrong. It's not the answer to anything." He didn't answer her. "But you're not going to stop are you?" She nodded to herself and turned away from him, clearing her throat. "Goodbye Sam."
"Wait, what?"
"I tried Sammy. You're my brother, and I love you. You know that. But I wont stay here and watch you do this to yourself. Not a chance." She turned away and walked out of the door, leaving Sam alone.