Inside Out and Upside Down {[Part One of the Forester Files]}

Megan Forester is an ordinary thirteen-year-old girl living the ordinary life of your everyday, average eighth grader. She volunteers at her local library and one day, happens to find a strange book shoved into the back of one of the shelves: an old, worn blue journal with the silver cutout of a six-fingered hand emblazoned with the number '4.' When she takes it home to repair it, she ends up reading a phrase from one of the pages of the book... And her life shatters into chaos as a certain triangle-shaped illuminati demon named Bill Cipher appears in her bedroom.

After being forced into a deal with the demon and getting herself trapped on the Mindscape, Megan overhears Bill muttering something about wanting revenge on someone he calls 'Pines,' and a place called Gravity Falls. Can Megan warn the twins before the demon gets to them first? Will she ever be free from the Mindscape and her deal with Bill?

Or will Megan be trapped as a disembodied spirit for the rest of existence?