"You're not crazy." Just brainwashed. "And I don't know why she went after me. It might be that she just didn't like me - she did it after asking stuff about me. It might be that she wasn't involved in me being here but figured out I was alien. But if she's behind why I'm here, it might be because I'm part of a group of people that fights people like her. We're called the Guardians."

He watches Crowley carefully, out of the corner of his eye.

Maybe mentioning the team will jog something.

"I've seen some of my teammates around town, too, acting like they belong here, so they must be brainwashed too. We're not even from this world, though. We're from a bunch'a different dimensions. Some are human, some aren't. All of us have powers, normally. We're all trying to stop something really bad, so we go to different places to save people."

He adds, "This world is kind of broken."

Cracking at the edges.

"But hey, a lot of worlds are."

His dimension is cracking at the edges too.