Supernatural Falls (Gravity Falls and Supernatural crossover)

In a world full of strange anomalies, it's not a surprise that some people get interested in them. But most people only know one side of the supernatural and odd spectrum. Either the side of hunting and destroying the creatures, or the side of studying them and learning where they come from and how. Each side requires a little experimentation from the other, but most stick with one.

Gravity Falls Oregon: a supernatural hotspot for the weird and odd. Home to the Pines family, who picked the side of research.

All of America: home of the Winchester brothers and whoever joins them on their trip, hunters who never stay in one place for more than two weeks.

It's an ordinary case for the Winchesters, you're pretty typical haunting of an old house. An old house, that happens to be in Gravity Falls. An old house, that happens to be under investigation by the Pines family. A haunting, that requires more attention than either side can give alone.

(I suck at descriptions)