"Oh, all right then."

She goes to follow him -

- and she can't make it past the door.

"Huh," she says absently, peering at the wooden door.

"That answers that. Our magic recognizes you as a...supernatural creature, is the most general term." 

"Since it does work, do you want to try looking at the book now? We can make a circle for something this important." 

"Right, yeah. And we'll see if we can trap it," she agrees. "And we can see if it's the book hiding behind my eyelids causing me to - be supernatural, or if it's me."

"Right. I don't know why you would be supernatural, most kinds around here you can tell because of the transforming and the violent urges...we should get started." 

So he heads to the back, returns with a jar of gray powder, and grabs a handful. 

He closes his eyes and walks, pouring it slowly. 

After a few minutes, they have a small circle, only large enough for a book. 

"What if the book doesn't count as supernatural without a...without an Yvette? Mountain ash only works on people, not things." 

"Then I guess I sigh heavily at how I still can't get away from the book that's stalking me. Watch your eyes, I'm going to summon it." And then she closes hers, and reaches out and retrieves it.

She looks down at it with something like disgust, then puts it in the uncompleted circle.

"Stay," she orders, sternly. And then she backs off so Dr. Deaton can (hopefully) trap it.

Dr. Deaton attempts to close the circle.

It's never failed before. Mountain ash barriers are the most reliable defense he has. 

He hopes it works. 

The circle closes without a problem.

"Right, I'm going to first see if I can get through the door while it's over there..." She cannot. She makes a face. "Then I'll just try walking away and see if it disappears and follows me. Let me know what it looks like when it disappears."

Then she turns and walks away.

For a few seconds, the book just sits there, looking perfectly innocent.

Then, when she's far enough away, the book slowly turns an impossible, light-eating, too-black black. If Scott or Dr. Deaton look closely, they can see tiny stars, glowing dimly in the ink.

And then the darkness fades, and the book with it.

"Uh. Yvette? It turned into a gaping space void and disappeared." 

"Gaping is a good descriptor." 

"Yay," says Yvette without enthusiasm, returning. "Gaping space void. Uh, when you say gaping, I'm not - ripping holes in the universe when the book goes back, am I?"

"I doubt I have the power to check. I suppose that would be incentive to read it, and it does seem to be pushing you in that direction." 

"It could just be how creepy space brain books look when they go home. I don't think we should read into it." 

"Probably not, I'm just being paranoid about it because it hides behind my eyelids and reminds me of Cthulhu," she sighs. "Want to see if I can toss it through the doorframe?"

"If you think it'll help. I'm increasingly sure this book is not leaving you alone, and the best thing to do is explore it safely, with supervision." 

"It might be cathartic," she says, attempting levity and sort of missing. "... But yeah, I agree. Safely and with supervision, possibly while I'm in an ash circle? Watch your eyes."

She summons the book. She tosses it through the doorframe; it sails through without issue. She sighs.

He sighs. 

"Alright. We'll put you in an ash circle with the book; it seems to like you, which hardly guarantees our safety. Or your safety, I suppose, but with powerful magical entities, I find it's better if they like you than if they don't." 

She snorts. "Yeah. I'd hate to see what it'd do to me if it didn't like me. Right, well. Any reason it shouldn't be right now?"

"Unless dangerous occult books are less dangerous when the sun is up, no."

He takes another handful of powder. He walks around her, slowly, eyes closed.

He completes the circle.

"I doubt it, it seems to be more. Space based. Light and dark, not just dark."

She sits in the circle, waits for it to be completed, and summons the book again.

"It glows when I open it too, so, uh. Watch your eyes for that too. ... And maybe tell me if it's different from when I summon it."

And then she opens it, and begins reading.

"Huh," she says out-loud, after a moment. "This isn't what I was expecting it would be, exactly."

"What is it? Exactly."