Get ready to dive inside another one of Dipper's journals. Mabel and Dipper have left Gravity Falls behind, but the adventure isn't over. 'Gravity Falls' Finale: Was 'Weirdmageddon Part 3' Everything You Hoped For? Fans Sound Off Series creator Alex Hirsch had an hour to wrap up the Pines' great summer adventure, and there are a few storylines that failed to make the cut.
