Supernatural's Winchester brothers are keeping secrets form each other once more.

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Sam (Jared Padalecki) won't give up his quest to save Dean (Jensen Ackles) from the Mark of Cain, but Dean is worried about more than just his own survival. The elder Winchester hasn't revealed what disturbing information Cain imparted before his death, leaving Dean to shoulder the dark prophecy alone.

According to the Father of Murder, it's Dean's new fate to kill Crowley (Mark Sheppard), Castiel (Misha Collins), and little brother Sammy.

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"Sam's keeping secrets from Dean, but Dean's also keeping some secrets from Sam, and Cain being a demon of sorts, Dean is trying to pawn it off like 'demons lie and you just said that to get under my skin.' So I think Dean is trying to ignore it, but of course, it's swirling around somewhere in the back of his brain," Padalecki teased, according to Variety. "Sam - not having the knowledge of what Cain had said - is going to keep on just doing what he's doing while Dean obviously struggles with the fact that this ancient Biblical character told him that they were doomed for some destiny."

But, hey, it's Team Free Will. Since when did they let destiny or fate push them around? It's time for the brothers to ruffle Atropos' feathers once more.

Find out more when Supernatural airs Wednesdays at 9 p.m. ET on The CW. Click the video below to see a preview for the series' next episode, "Paint it Black."

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Supernatural, Television, The cw