Bitty is all anxious and wound tight, but he doesn't seem to be afraid. Not of Derek, at least. Derek assumes that someone must have told Bitty what he was, considering how many people in the city know. What he isn't expecting at all is exactly what he gets.

A TV show. Bitty isn't lying and Derek sort of staggers backwards in shock. Neil reaches out to grab him and Derek lets out a breath, staring at Bitty in shock and confusion. It's not like the idea itself is what's so shocking. Derek is friends with Tolkien characters, after all. Harry fucking Potter is here. Superheroes roam the city, so it's not like Derek doesn't know that it's possible. He just never assumed that he would be the fictional one. Who the fuck would want to watch his life story unfold?

That thought makes Derek freeze, because he suddenly has no idea just how much Bitty knows about him. Derek likes to keep parts of himself hidden, and keep his past to himself. There are only a very select few in the city who knows what he's been through. Them-- and now Bitty, apparently.

"So-- you know everything about me," Derek gets out, looking absolutely stricken by the thought. "All this time I thought we were getting to know each other, but you already know all of my goddamn secrets."

He has no idea how to react to this, and he doesn't need it. Not now, not when they're stuck in some fucked up bizzaro Darrow and there's still monster blood congealing on his fingertips.