Yeah, I know. [He knows it's a process of elimination when it comes to the supernatural because so much of the mythology does get it wrong. Like silver bullets and werewolves -- or at least the ones from his world. That's the other thing that complicates it. Even if some of the mythology he reads about gets it right for some vampires, there's no guarantee it'll have the same impact on vampires from another universe.

He nods at Dean's comment about the reflection.] There's a theory that if a vampire doesn't have a soul, it won't have a reflection. [Which makes him think of his conversation with Mason all over again. Mason who suddenly wanted to get sober and graduate so he could try yanking Jerry's soul so he couldn't hurt anyone. But if the soul thing was true, that tactic won't work on Jerry anyway.] I don't know if they were from sunlight or fire. They healed in a few days, though. Probably would've been sooner if his powers weren't tamped down.

[Stiles rubs a hand over the back of his neck, meets Dean's eyes momentarily.] He fed off two friends of mine. [He doesn't feel responsible for this, not this time. He hadn't been around, hadn't even met Jerry yet when it happened either time. But he does want to make sure it doesn't happen again. His main purpose in the pack is research, and he's throwing himself into it headfirst, the way he always does.]