Copies of the book sold at Barnes and Noble have sixteen extra pages featuring behind-the-scenes sketches and secrets.
Soos's latest obsession breaks reality... and the fourth wall!
"Don't Dimension It"
Mabel's accidental trip through reality teaches her that multiverses cause multi-problems!
"Pines Bros. Mystery"
- Cameos and references appear alluding to both the show and other material:
- The Hand Witch from "Little Gift Shop of Horrors", the Mystic Amulet, and a Lilliputtian are seen in the Black Market.
- The memory canisters belong to Gravity Falls characters Tad Strange, Tambry, Abuelita, Li'l Gideon, and a "Mrs. Corduroy".
- Eda from The Owl House can also be seen on a wanted poster.
- Non-Disney references include Slender Man, the Scream, Rick and Morty, and Archie.