What seemed to be lightning flashed around the bars of the cage, and flames flickered from torches along the wall.

"And hey, I-I'm not the good guy, we both know I'm not. But, uh, the Darkness? She's the end of everything."

Lucifer's voice drifted into a quiet and excited whisper.

"But I can beat her. We can beat her. You and me. Together." He paused. "So come on, Sam. Make the right choice. The big sacrifice, one more time. Sam. It's time to save the world, man."

Sam's head tilted to the side, looking down and away from Lucifer. Closing his eyes, he sighed, then opened them again.

"Fine. I'll do it." He spoke in a hushed murmur.

Lucifer's smirking expression brightened, putting his hand on his chin. "Come on, Sammy, I need to hear you say the magic word..."

Sam's face tightened, nails digging into the skin of his palms. He turned back to Lucifer, resolve set hard in his eyes.

"Yes."