'Supernatural': Misha Collins and Jim Beaver will return in Season 6
In the Season 5 finale, the both characters were killed -- Castiel exploded like an over-filled water balloon, and Lucifer snapped Bobby's neck. Of course, since this is "Supernatural," they were resurrected minutes later. Castiel headed back to heaven to "be the new sheriff in town," and when Dean and Bobby said goodbye, it was made clear that it was "the last [they] would see of each other for a very long time."
When Season 6 begins, Dean has retired from hunting and, after making a promise to uphold Sam's dying wish, sworn never to go back to that life. Sam, who has somehow escaped from Lucifer's cage, will have to convince him to get back on the road to deal with the aftermath of the battle between Heaven and Hell.
Luckily, they'll have their father figure Bobby on their side, and Castiel's newly-regained angel powers should come in handy as well.
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Photo Credit: The CW