It's-- well, I can't actually show you because it's super top secret and there are curses on it if I do, but I can get you one. There's this--[He pauses and turns up the music a little louder. Just in case.] A resistance. People who are working to find a way out of here. And they have these magic notebooks which are pretty much the only way to communicate and be sure the mirrors won't eavesdrop. James'll give you one if I ask him to.

[Because she's his sister and she's going to know everything dipper knows either way.]

it's cool, though. You write in it and everyone who has one can see it.