Gravity Falls Codexery

The Book of Bill

A retelling of Gravity Falls from Bill Cipher's perspective.

The Book of Bill is a science fiction book for teen and adult audiences, published by Hyperion Avenue Books and based on the children's animated television series Gravity Falls. Written by series creator Alex Hirsch, it retells the series' story from the perspective of primary antagonist Bill Cipher, who is credited as a co-writer and artist. The book extends before and after the events shown in the series.

Quick Facts

Publisher
Hyperion Avenue Books
Date
July 23, 2024
Original language
English
Writer
Alex Hirsch

Facts from the source article.

Publication history

After the Gravity Falls finale, Alex Hirsch mentioned considering books based on the series using ideas too short, weird, or specific for the show. The Book of Bill was first announced in December 2023 as the first Gravity Falls book without the series name in its title, intended for an adult audience. It was released on July 23, 2024, with a Barnes & Noble exclusive edition containing 16 extra pages. A limited collector's edition with a glow-in-the-dark slipcase was announced on June 18, 2025, and released on September 23, 2025.

Critical response

The Book of Bill was generally well-received. Oliver Curry of Comic Book Resources wrote that it explained important series mysteries engagingly and included jokes and details about fan-favorite characters. Kate Bove of Screen Rant noted it revealed new lore about Bill Cipher and Gravity Falls, offering a humorous, fourth wall-breaking installment. The book appeared on The New York Times Best Seller list in July 2024 and remained there twenty-four weeks later as of January 2025.

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