Sam honestly isn't sure he wants to know all the details. But he also knows he can't avoid them now; he has to be aware of everything, needs every piece of information he can get to figure out where the hell Dean -- or the demon, whichever -- might have gone.

And what Mike reveals... Sam isn't surprised. He doesn't like it, the images that come to mind making his skin crawl and his stomach queasy, but some part of him also understands. Sam hasn't the faintest idea what those things did to his brother in Hell, but he knows what demons are capable above ground and that's bad enough. So whatever happened, whatever Dean had to endure down there, Sam knows it fucked him up. Maybe even fucked him up more than watching his brother get taken in by Lucifer.

Maybe.

"I need specifics," Sam says, his voice low and almost eerily calm as he heads immediately for his bedroom, for the hidden latch behind a piece of art he'd found at an import store (and that had given him a weird laugh at the time -- where exactly are they importing from here?), revealing the arsenal of weaponry carefully arranged behind it. "Tell me exactly what he said to you. Every word you can remember. Did he mention anyone else?"