Fics like Through a Slender Opening

A tragic accident makes Dipper and Mabel into orphans, Gruncle Stan into their sole guardian, and Gravity Falls into their permanent home. To cope with the grief, Mabel experiments with going goth (inadvertently upsetting the social order of the local high school) while Dipper seeks out a new investigation to lose himself in (and rumor has it there's another new kid in town with supernatural abilities). Meanwhile, thanks to a different tragedy (and a crappy economy), Norman finds himself once again a shy loner with no friends who aren't Ghosts. Fortunately, a long-dead comedian makes it his death's mission to bring laughter into Norman's life again. And then, an eldritch entity shrouds the town in a chilling fog and begins abducting children. Can the three kids (and one Ghost) band together to stop it before time runs out? … Or will they become its next victims?

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