The Book of Bill is a hardcover that brings back the infamous demon from Gravity Falls. Fans who have missed him will enjoy getting Bill Cipher's perspective as he shares his unique origins and the strange effects he has had on human history. This book reveals the Pines family's most embarrassing secrets and even includes a step-by-step guide to overthrowing the world. The chaotic and beautifully illustrated pages contain baffling riddles, uncrackable ciphers, lost Journal 3 pages, ways to cheat death, and the meaning of life, along with a surprising chapter dedicated to Silly Straws.

Written by Alex Hirsch, the #1 New York Times bestselling author, this tome offers a thrilling view of the Gravity Falls universe through Bill's eyes. Many believe that this book holds dangerous secrets best kept hidden from human hands. Those who are tempted to delve into its pages should be warned: once a deal is made with Bill, it is not easily undone. This book is designed for older readers and takes them on a journey through dimensions filled with chaos and curses.