Supernatural Stars Preview 'Chilling' Finale Cliffhanger, 'Extreme' Measures to Save Dean

Supernatural Season 9 SpoilersWith Dean full of First Blade-fueled rage after last week’s Supernatural, Sam and Castiel will be forced to do the unthinkable to save their brother and friend in this Tuesday’s season finale (The CW, 9/8c).

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“Sam and Cas are going to have to team up because Dean has powers that are heretofore unknown, so they’re surprising both Sam and Cas,” previews star Jared Padalecki. “We have to go to a pretty big extreme to take care of what’s going on with Dean.”

Meanwhile, as Cas faces the loss of his angelic powers, he “may go to great lengths” to save his own skin, says co-star Misha Collins; at least it seems like he’ll have some time before his juice runs out completely. “I’m interested to see what the writers do with Cas’ fading grace in Season 10.”

Although the Winchesters have been at odds for much of the year, Padalecki assures TVLine that the season ender is full of “a lot of what makes Sam and Dean Sam and Dean and a lot of that brotherly love that the show is based on. You see a lot of it in the finale, in a weird way. So hopefully, next season, we bounce off of that” to show a stronger bond between the two, he says.

While finishing some post-production sound work for the episode, Padalecki found himself overwhelmed by a gamut of emotions. “Parts of it made me laugh, parts of it brought me to tears and parts of it really gave me that feeling where I was excited to see what happens next,” he says.

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But before fans can see what comes next this fall, they should prepare for a long, torturous summer: Padalecki teases that Tuesday’s hour closes with a “huge” cliffhanger that changes the landscape “big time.”

“More than any other season before, this season finale has implications for Season 10,” he adds. Says Collins, who sums up the ending as “chilling”: “It may be the best last 10 seconds of a season that we’ve had in five years.”

(With reporting by Matt Mitovich)