A bunch of mysteries happen in Gravity Falls, but this one is like no other. Find out what happens in this short unaired pitch pilot by Alex Hirsch for Disney's Gravity Falls from 2010.
Where to Watch Gravity Falls: Pilot
Cast of Gravity Falls: Pilot
Alex HirschGrunkle Stan
Jason RitterDipper
Justin RoilandGnome King
Kristen SchaalMabel
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