5 'Supernatural' Season 8 Spoilers You Need To Know - Starpulse.com

1. Dean Winchester had an extended stay in purgatory.  TVLine.com reports that Dean was struck in the nether-realm infested with the very monsters he’s dedicated his life to killing for at least a year.  When Sam had an extended stay in hell, he left without his soul, so don’t bet on Dean returning with a killer tan.
2. While Dean was away, Sammy got laid.  As the last surviving member of what was sarcastically dubbed, “Team Free Will,” Sam (Jared Padalecki) stopped hunting and eventually finds love with a "tragedy-damaged" woman named Amelia who will be played by Liane Balaban, according to EW.com.
3. Castiel will be back.  Castiel will be in at least eight episodes of “Supernatural’s” 23-episode season as per EOnline.com.
4. Dean is indebted to a monster.  An angel may have raised Dean from perdition, but season 8 will see our favorite hero rescued by a monster according to TVLine.com.  “Battlestar Galatica’s” Ty Olsson will play Benny, a “dangerous” vampire that aids with Dean’s escape from purgatory and will stick around for a chunk of the season
5. Season 8 will feature flashbacks. TVLine.com reports that the upcoming season of the road-tripping paranormal show will join Sam and Dean after they have reunited and will depict pivotal moments in of their considerable separation in flashbacks.

Source: 5 'Supernatural' Season 8 Spoilers You Need To Know - Starpulse.com