Before Supernatural ended its fifth season a couple of weeks ago, most of its viewers knew that the series had been renewed for another season. The internet buzzed about writer Sera Gamble’s admission that the apocalypse plot would be resolved in the season finale, which was rumored to include the death of a beloved character. Some of its more media savvy fans knew that stars Jensen Ackles (Dean) and Jared Padalecki (Sam) had signed six-year contracts, so rumors spun that either Misha Collins (Castiel) or Jim Beaver (Bobby) would be leaving the show.
On the season finale, Sam allowed himself to be possessed by Satan so he could lead him into a trap that would render him powerless. During the struggle, his half-brother Adam (Jake Abel), who was possessed by the angel Michael, fell into the same trap and they all vanished. Castiel went back to Heaven, and the prophet Chuck stated that Dean gave up the hunting way of life and wouldn’t see Bobby for a long time afterward. As we seen Dean sit down to dinner with his ex-girlfriend and her son, Sam (or something that looked just like him) was standing outside of their home. Then Chuck mysteriously vaporized away.