The CW Network has debuted an extended clip from the Season 8 premiere of Supernatural entitled "We Need to Talk About Kevin", airing Wendesday, October 3 at 8 PM ET. Sam (Jared Padalecki) and Dean (Jensen Ackles) are finally reunited this season, after Dean spent a year in Purgatory, which seems to have changed the demon-hunting brother. Take a look at this revealing scene where Dean tries to explain what happened down below, including what happened to Castiel (Misha Collins).