Cas finally comes back from Heaven on Thursday's episode of Supernatural "The Future."
Here's a preview on what to expect, per EP Andrew Dabb:
When Cas comes back [in this Thursday’s episode], we’re going to get a lot of clarity in terms of not only why he’s been in Heaven for so long, but his own point of view on why he went.
Some people are looking at it like, “He went to Heaven because he’s choosing angels over Sam and Dean,” and things like that. What’s going to come out very strongly when he comes back is that what he’s doing, he views as doing for our guys. That’s been a big part of the season overall: Sam and Dean have proven themselves as heroes, certainly to everyone around them. So whether it’s Cas or Crowley or Mary or Mick until his unfortunate demise or anyone else in our story, these are people who realize Sam and Dean’s importance. Sam and Dean have always been willing to sacrifice for each other. Now we’re seeing a lot of people around them that are willing to sacrifice for Sam and Dean, and it’s really about building a sense of community.
Head over to Supernatural Episode Guide: "The Future" for the full description, photos and promos of this episode.
BONUS SPOILER BIT | Dabb previews what's next for Sam and Dean and their partnership with the Men of Letters:
It’s obviously a little strained. [The British Men of Letters] want everybody dead. But as they are a massive organization and very corporate in their own way, they’re going about it in a very organizational, methodical way.
In Episode 20 [and] 21 into our end run, they start to make those moves and, to be a little vague, people that Sam and Dean know and love pay the price. It’s a way to take this organization and bring the fight home for Sam and Dean and force them to take a role, which they haven’t done that much.
Outside of a few friends, they don’t have a lot of contact with the wider hunter community. So it forces our guys into a leadership role. They’ve been soldiers for a long time — and not that they don’t do their fair share of fighting — but toward the end of the season, they’re becoming generals. They’re taking a much stronger role in the wider hunter community as the Brits take the fight to them.