Something was off with Sam. Just – off.
Since they'd gotten back from their last case, he'd had been acting weird as hell. Staring blankly into space and mumbling to himself. Disappearing for long periods of time. Bursting into fits of wild laughter at seemingly arbitrary moments.
When Dean had tried to talk to him about it, Sam had just clammed up and walked away.
Sam - Sam - didn't want to talk!
It wasn't possession. Dean had checked that first thing. But, damn it, something was going on with his brother and it was something bad, Dean just freaking knew it!
