Sometimes the earthly known can scare you the most. (Or, the one where everybody has survived Weirdmageddon, and it's easy for Robbie to see that everything has changed. For the better, mostly.)

MAJOR CHARACTER DEATH. Basically after John's death, Dean goes on a "hunt" trying to track down one of the Pines Twins. What will Dean discover when he finds them? And what does Bill have to do with any of this? Set in the beginning Supernatural's second season. Au, since the Twins are 20-21 not 12.

They've seen it all. Vampires, ghosts, demons; if you can name it, they've likely encountered it. But no experience could have prepared Sam and Dean Winchester for the oddities of Gravity Falls. And yet, for Mabel and Dipper, it's just another summer's day.

"Trust me, it all makes a lot more sense once your realize that angels are dicks."

It wasn't their usual TV dinner fare. But they'd take it.

Dipper had thought that he was done with the supernatural, that he was done with the deal. But little does he know that the mysteries he once hunted are now hunting him. Spoilers through Sock Opera

Saving people, hunting things. The family business.

Bill Cipher is trying to open a new hell in Gravity Falls for Abbadon. The Winchesters and Castiel are in town too, but for Dipper and Wendy they are characters from books. Will they stop the demon? Will Abbadon takes an advantages on the hell war?

Dipper and Mabel Pines are determined to discover the secrets of their summer home in Gravity Falls Wyoming, the most mysterious of which being that of the old railroad tracks surrounding town that no one dares to cross. Could the origin of Gravity Falls be tied to its founder? And what of those plotting its destruction from the outside?

Also known as how the Winchester brothers missed out on what might possibly have been the biggest hunt of their lives.

Chuck's first dreams as a prophet of the lord began far before the apocalypse. Set before both shows.

Bill Cipher is the least of their worries as Dipper and Mabel do the family business. They thought that they were on an ordinary case, but it blossoms into something else. With a new threat rising, they must find a way to save each other. Angst-y, with a chance of tears. Character death. Rating because of language, killing, mentions of suicide and cutting, and possession.

A girl named Foster meets her new family in Gravity Falls. She then falls in love with a boy named Dipper but she doesn't understand why.

The sequel to The Abandoned House. A year later and Dipper is still has no more information than he did when he suddenly gets a lucky break. No actual knowledge of Supernatural required. You can learn with Dipper!

Sam and Dean haven't had a case in a week or so, and they find themselves in Oregon, just wishing for a case. When they hear of Gravity Falls, it seems like a cheesy enough tourist trap to relax for a bit in, but the town turns out to be so much more, and they realize they're not alone on their new case when Mabel and Dipper Pines show up. (Spoilers for Se.8 of SPN and ep.17 of GF)