Irrational Treasure Gravity Falls : Season 1 Episode 8
TV-Y7 Disney Channel 23m
Aired: August 17th, 2012 @ 9:30 PM EST on Disney Channel
When Dipper and Mabel discover evidence that the reported town founder is a hoax, they set out to expose the historical cover-up and prove that Mabel's silliness is not a bad thing.
