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 finale, "Weirdmageddon 3," boasts some scary Gravity Falls moments ...

Alex Hirsch talks about Bill Cipher, Summerween, Gravity Falls, and which character deserves a 50 Shades of Gray-style spinoff. The Book of Bill is out now.

But Bill Cipher, the inter-dimensional demon bent on taking over the multiverse, is back in action — or at least, he’s back in a new book penned by Gravity Falls creator, Alex Hirsch.

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.

Scary-oke. Tue, Aug 5, ... Meanwhile, Dipper learns an unexpected twist about the enigmatic Bill Cipher. Where to Watch. Episode 16. Roadside Attraction. Mon, Sep 21, 2015 23 mins.