"Depending on you."
"Maybe you should at least hear what Crowley has to say."
Yeah… Cass really, really, REALLY hated himself.
Why the hell couldn't he just keep his mouth shut?
"Because you're the reason Sam and Dean are in this mess." A voice that sounded like his own, whispered from inside his head. "Out of everyone, you're the character that's done the most damage in this story… After all, you're the one who's really responsible for Lucifer being freed from The Cage. You're the one who brought Sam back without a soul, YOU made a deal with Crowley. You're the one who cracked open Purgatory and let the race of Leviathan loose and you're the one responsible for helping to cause the angels to fall from Heaven."
The voice was right. He had done all of those things and more.
"You feel guilty Castiel." The voice whispered, but now it was beginning to sound like Metatron's voice "You want to make things right."
By the time he realized what was happening, it was already too late. Dean was already in the dungeon making a deal to let Crowley walk free if Crowley could save Sam. Cass had unknowingly played into the hands of the opposition yet again by simply making Dean aware that Crowley could possibly save Sam.
"You can't be considering this."
"Why not, Cass?"
"Because you can't just let Crowley go. Sam wouldn't want you to do that. He'd want you to.."
"Yeah, well, Sam's not here, now is he?!" Dean bellowed. "Hell, Cass, you're the one who said that Crowley could get that bastard out of my brother!"
"But we both know that Crowley can't be trusted."
"That's why I'm not letting Crowley leave the bunker until I know for sure that Sam's okay."
"What do you mean?"
"I'm gonna bring the angel to us…"