Witches and angels weren't usually the type of thing that went together in Sam's experience, but then again Castiel hadn't exactly been what he'd expecting of an angel either. His experiences with witches had been far from good and so he made a mental note to look out for anyone who might meet that description. Maybe they were behind them being here. He raised an eyebrow. "Wait, other planets?" Sam asked, this time unable to hide his disbelief. "As in aliens?"
"So, they were zombies," Sam said, triggering something at the back of his mind. He furrowed his brow, trying to hold onto the thought that had unexpectedly surfaced, but was gone before he could get a good hold on it. "Do you remember how we got out the first time?" Sam asked, knowing it was a longshot.