A/N: Sorry for the lack of update last week. I was away and I didn't have much wifi. Thanks to everyone who's read this so far! This chapter is the request for NineCrow. I hope you like it!

Spoilers: Minor spoilers for 4x21 'When the Levee Breaks' and 5x14 'My Bloody Valentine'

The scene was all too familiar. Sam, locked down on the bed in Bobby's panic room whilst pain wracked his body and screams ripped their way out of his throat. The difference was, this time he went willingly. No tricks were needed, no fake phone calls or secrets. Sam wasn't sure which was worse.

He pleaded with Dean and Cas to help him, but none was forthcoming. None was going to come and he knew that, but it didn't stop him from asking anyway because all he needed was for his brother to reassure him that everything was going to be okay.

Of course, that was a complete lie. Sam knew he'd done what he had sworn never to do again and he was paying a just price for it. He'd violated ever moral code he possessed and all but shattered the tenuous relationship he and Dean had managed to rebuild since Lucifer was freed. For what seemed like the hundredth time, they were back to square one. It would be a miracle if Dean managed to trust him ever again for, if he fell of the wagon this easily, what's to stop him doing so again?

He screamed as another bolt of pain ripped through him. He squeezed his eyes tightly shut and a tear slipped down his cheek. His arms and legs jerked and spasmed uncontrollably and the bonds around his joints dug sharply into his skin as he strained against them. He curled his hands into tight fists to try and stop the tremors but it was useless, only resulting in his fingernails leaving crescents in his palm where they had dug into the soft flesh.

"Hey Sam."

Sam's eyes flew open and he whipped his head to the side as a silky voice sounded to his left. Lucifer lounged against the wall of the panic room, his arms folded, smirking at Sam.

"No. You can't be here, this isn't real," Sam ground out.

"True," Lucifer admitted. "Thanks to that warding my little brother branded onto your ribs, I can't find you. This is just some fever dream your brain is spitting out because of that demon blood you drank."

"Why are you here?"

"Isn't it obvious?" Lucifer asked, puzzled. "I want to understand you, Sam. I want to know what goes on inside that broken head of yours. I want to help you."

"You're lying."

"I promised you no lies, didn't I? Ask yourself this, Sam, who is really the villain here? Look at what my brothers are doing to Dean. They're trying to trick him into being Michael's vessel. They're trying to break him, to force his hand into saying yes. Now look at me. I've never tricked you, never lied to you, and I never will. I'm giving you free choice here. You will say yes, in time, but I want you to do it freely."

"No. You're wrong. I will never say yes to you," Sam spat out.

"We'll see. Remember, Sam. Detroit." Lucifer laughed once, then disappeared. Sam looked around wildly.

"YOU SON OF A BITCH! I'LL KILL YOU!" He screamed into the empty room. He let out a cry as a sharp pain built behind his eyes and let his head fall back onto the pillow, his eyes slipping closed.

When Sam woke, most of the pain was gone. There was a gnawing ache in his belly from hunger - for food, thankfully - and his skin was pale and clammy, but he knew the worst was over. It had been quicker than last time, but last time had been from months of consumption. This time was just a fraction of that amount. He swallowed hard and winced at the way it scratched his dry throat.

"Dean?" he called, his voice hoarse. "Dean, it's over. Let me out, please."

It took a few minutes, but at last Dean entered the room. Wordlessly, he unlocked Sam's shackles and helped his brother into a sitting position. His legs were shaky so he sat for a moment before staggering to his feet. After making sure Sam was okay and wasn't going to fall over any second, Dean turned on his heel and stalked out of the room.

"Dean..." Sam's voice trailed off and he watched his brother walk away, his heart growing heavy with the weight of what he had done. He sat back down on the hard bed and buried his face in his hands, a small sob escaping him.

A/N: So how was that? I think it went a bit off at the end. :/ Endings are hard. What do people think of season 12 so far? Drop me a PM if you want to chat, or if you have a request you want me to write, or include that in a review. I'll update next Tuesday. Bye!