Mabel barreled into the Shack, tripping and tumbling across the floor. She lay there for a moment, panting, before lifting her arms victoriously. "I won!"

Stan looked at her in confusion, before shrugging, going back to counting the money he'd made.

Wendy jogged in through the door, and although she was breathing a bit heavily, she didn't seem to be even near half as winded as Mabel was. "How are you so fast?" She asked, before noticing Mabel was collapsed on the floor. "Uh, you okay?"

"Yep! I'm good." Mabel said, sitting up. "Okay, let's go upstairs and see what's in the book!"

"What book?" Stan interrupted.

They both looked over to Stan, blinking.

"Let a girl have her secrets, Grunkle Stan." Mabel said, winking as she held the journal behind her back.

Stan looked around in confusion. "Uh. Okay," He said after a moment.

Mabel grinned at Wendy, and they both began to walk off.

"Oh, by the way, Wendy? You're doing double the work tomorrow."

Wendy shrugged, rolling her eyes, and none of them needed to hear her thoughts, because they all knew full well that Wendy still was going to slack off for most of it.

"Anyways. Book." Mabel clapped her hands together, before bolting off into the living room. "C'mon! I'm gonna die of curiosity!"

Mabel ran upstairs and plowed through the attic door, hopping onto the floor as Wendy kneeled down next to her.

She opened up the journal..

The only thing of note on the first page was the note that stated its owner— it had been torn away, the 'property of' being the only remain.

Mabel flipped over the page, and began to read aloud. "'It's hard to believe it's been six years since I began researching the strange and wondrous secrets of Gravity Falls, Oregon. In all my research, never have I observed so many curious things! Gravity Falls is indeed a geographical oddity.'Frowning, she quickly skimmed over the rest of the page, and when she didn't find anything of interest, flipped the page—

Only to be greeted by sketches of floating eyeballs and giant bats.

"Dude, what?" Wendy gasped. "I saw a floating eyeball last week, but I thought it was just a hallucination!"

"Okay, so…" Mabel blew her hair out of her face as she thumbed through the other pages. "This is either a super elaborate prank, or it's real."

Mabel continued to look through the journal, only stopping to make comments about things like the 'hawktopus' ("'Too stupid to study?' I think a hawktopus would be cool! Especially if you could ride it!") and the plaidypus. ("Wendy. Don't make me get those truth-telling teeth, there is no way you've seen something more adorable than that.")

But after the page which contained what they both agreed could only be described as 'a weird and kind of ominous drawing of something' (though they weren't sure exactly sure what it was) the pages began to grow more frantically scribbled, more strange and paranoid, and bloodier…

Until they just stopped altogether.

"What? They just stopped?" Wendy said.

"Did he get killed by the mafia?" Mabel asked, looking

"Uh, I don't know. Flip back. Maybe there's something on the other pages?"

Mabel did so, and was greeted by a page splattered with old, darkened blood and messy cursive

"'Unfortunately, my suspicions have been confirmed, I'm being… watched'?" Wendy stared at the book in confusion.

"'I must hide this book before He finds it.'" Mabel continued. "'Remember— in Gravity Falls, there is no one you can trust…'"

"So. Mafia."

"Yeah, there's definitely a hidden mafia in this town," Mabel said, flipping back through the pages again.

"But do you think, like, the weird supernatural stuff is real? Or do you think this is just some crazy paranoid dude who may have been murdered?"

Mabel leafed back through the pages, pausing on a page with what looked to be a summoning ritual, along with pictures of… well, something.

Ghosts and specters appear to be completely separate entities. The creatures I previously called 'ghosts' seem to be malicious entities I mistook for the souls of the dead. For the sake of consistency, however, I will be calling a proper ghost a 'specter' instead.

With a little help from some of the townsfolk, I have figured out how to do a real seance. The instructions are as follows…

She hesitated to ask, looking back at Wendy, but Wendy just grinned. "I like what you're thinking."