Bill Cipher's Fate Is Revealed In The Gravity Falls Tie-In Book Thanks to The Book of Bill, we finally know what happened to Bill Cipher after the Pines family saved the day. For me, the series ...

Gravity Falls, which aired over the course of four years, gained a cult following of fans who would comb every aspect of the episode for clues, codes, messages, and ciphers to decrypt and solve.

Gravity Falls’ big villain, Bill Cipher, is getting his own book written by series creator, Alex Hirsch. And it’s for older readers! Out in July.