Top 10 Best Mature Supernatural Fanfics

by microcomets · Castiel/Dean Winchester

Dean’s your typical half-orphaned, monster-killing 22-year-old until a trenchcoated stranger crashes into his back windshield one September night, claiming he’s an angel that knows him from the future and that he’s on the run. Frigging fantastic. (Or, in which Castiel gets stuck in Dean’s timeline p

by glassedplanets · Castiel/Dean Winchester, Gabriel/Sam Winchester

"I mean, you’re–” He gestures at Cas, in his neat oxford shirt and nice pants. “–and I’m a high school dropout who tattoos for a living.”  Wherein Dean makes a hefty living as a tattoo artist who owns the space next to Gabriel's cafe. Sam attends the local university. When Gabe's cousin comes to liv

by saltyfeathers · Castiel/Dean Winchester

There's a haunted apartment building in Vermont, and the ad says "Professional couple only". Dean and Cas rise to the occasion.

by Jassy · Gabriel/Sam Winchester

AU. Sam noticed a few things weren't quite right after they killed the Trickster. After going back to check things out, his life will never be the same.

by entanglednow · Gabriel/Sam Winchester

Sam wakes up on the bathroom floor.

by MonPetitTresor · Gabriel/Sam Winchester

The Cage was never meant to hold a human. It was meant for one archangel, not two, and definitely not a human soul. Little by little Sam's soul was being destroyed by the torture the Cage inflicted on it. Lucifer and Michael joined together and, with their combined grace, pieced together Sam Winches

by SailorChibi · Gabriel/Sam Winchester

It turns out there's more to sex with angels than Dean realized. Unfortunately he only discovers this after the nest is built and his body is ready for the next step. It's a good thing that at least Sam is willing to pray for help.

by GiftedZireael · Gabriel/Sam Winchester

In the grand scheme of things, Stiles never really expected the Winchesters to make their way through Beacon Hills. Or that one of his long forfeited brothers might be with them.But if it comes down to it, Stiles knows he'd sacrifice anything for his pack and alpha; for Derek.Even if it means fighti

by Kyuu963 · Michael/Adam Milligan

The halloween party came and went. It was only a few days after the New Year, that Sam found Jessica, his newly made fiancée, ablaze on the ceiling. He did the only thing he could. Call his brother.It wasn't a shock to have his father answer Dean's phone in his stead, but it did chill Sam to his cor

by aethylas · Michael/Adam Milligan

A rewrite of Supernatural’s final two episodes, expanded into a five episode arc - in which Chuck needs to be defeated, Castiel deserves to be saved, and the characters in this story get a very different ending.