"Oh, no, I've got all kinds of stuff in here." He flipped pages fairly rapidly. "Druids... darachs, werewolves, werecoyotes, kanima--" Here he stopped. "Uh... the note says 'much worse in real life' and trust me, this thing's beta form is hell on wheels. When it gears up to cause some serious damage..." Stiles shuddered. "They're made when a werewolf bites someone who shouldn't be a werewolf."
He resumed his flipping until he came to the blank page that marked the end of what the author had written and Stiles had thoroughly critiqued. "Okay, so, you have to know--I don't know if what's on this page is gonna work every time, or if I got really lucky. Because, honestly Emma--I probably just got really lucky."
Drumming his fingers on the blank page, Stiles looked up at her. "This... I don't know anyone else who's experienced this. It's some crazy, screwed up metaphysical stuff." He paused, clearing his throat. He drummed his fingers once more and then flipped the page to reveal two whole pages of his scrawled handwriting.
"Basically, I was possessed by a thousand-year-old creature that feeds on chaos and disruption. From what I understand, it's supposed to hollow out its victim. But it didn't hollow me out. It came in through a break in my mind from something that happened a little while before." He shrugged uncomfortably. "I got a chance to force it out. But I don't think everyone can do that and I'm not sure if it's fool-proof."
Stiles let the book rest open. "I don't know a way to stop it from happening but I know that it's almost guaranteed to happen if you have a weakness in your metaphysical barrier. So we need to figure out whose metaphysical barriers are weak. And I'm gonna go ahead and say that as strong as I think I am, I probably still have some weaknesses there."