Okay, so it turns out Wal-Mart's selling the real Journal 3. After reading through it, I was pretty impressed, but also quite sad, as nearly every last secret of Gravity Falls was uncovered. From "Who Stole The Capers?" (The Butler did it) to "What's Dipper's Real First Name?" (It's Mason. Why he's ashamed of it is beyond me.) All the way down to what happened while Ford was in the Portal. I won't lie and say that reading that book cover to cover brought tears to my eyes because... it's really over. Gravity Falls is done and over with. Or is it? I wouldn't be surprised if the Journal has invisible writings on it, just like the one in show, revealing some pretty big secrets in the process.

It has a secret message from Bill.

5621308 They're releasing some special editions with the invisible writings. But chances are you got the standard edition, so no blacklight for you.

5621308 I personally loved the section Dipper wrote about Pacifica the most.