Supernatural Season 10 Spoilers: New Hunter, Dark Sam Winchester and More

Season 10 of Supernatural finds Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) in a very dark place, as Dean is now a demon and Sam is on the hunt for his brother. But he's not the only one.

The "Spoiler Room" column at EW.com reports another hunter named Cole, "a new character who might not be the type of hunter you're used to," will join the show. Showrunner Jeremy Carver previewed his relationship with Dean could affect the whole show.

"It gets very interesting in that Sam is hunting down his brother, who he eventually will discover is a demon-he doesn't know that on the onset-and with the hopes of saving him or curing him in some way," Carver said. "While you've [also] got this character of Cole, who is hunting down Dean for entirely different reasons. It's going to cause all kinds of complications, and the character of Cole is someone who will evolve from how we see him to something very different once he finally does come face-to-face with Dean."

Carver also indicated Sam would go further than he ever has in order to protect his brother.

"I think historically, Sam has been the brother that has gone around the bend a little bit-when he became a demon with the demon blood and everything-so picking up from last season, Sam finds himself in something of the position of protector. That's a bit of the flip for the boys," Carver said. "It's something that Sam takes very seriously coming into this season while also having to deal with some of the things he did, which are morally questionable, while on the hunt for Dean."

Could Sam actually act in more shocking ways than he did when he had no soul? "I'll leave that to people to decide," Carver replied. "Again, it's morally dubious given the pursuit that Sam is on, but yes. If one were to pluck it out in isolation without any context, I think one could say yeah, that was pretty dark."

Dean will also still have the Mark of Cain throughout the season, which would complicate Sam's attempt to cure his brother. Recall that Sam tried to cure a demon during the trials in Season 8.

"They're going to see new difficulties in trying to cure Dean, because 1) There's not a demon possessing Dean. This is Dean's own soul that was twisted, so that's a bit unique. And 2) It's not just the demon-ness that's the problem, it's the Mark of Cain. So there's some added dimensions here in terms of levels of difficulty," Carver said.

In fact, the Mark is such a problem that it becomes a priority for the brothers. "It's still around, and it's very much a question for the first run of episodes if it still has an effect on Dean or not," Carver said. "And it's very much on the boys' minds as they plot out a game plan for the next batch of episodes after Dean is healed. In other words, the boys are very much focused on healing their relationship and healing one another."

Interestingly, Carver seems to confirm here that Dean will be cured in some way, whether by Sam or another force. Supernatural has a tendency to create great cliffhangers and then resolve them almost too quickly the following season, though they do a great job at showing the lingering effects of these problems as the season progresses. Hopefully Demon Dean won't be a quick problem that the brothers solve in a handful of episodes.

What do you think will happen in Season 10? Let us know in the comments below.