It's almost time for Supernatural to play Kansas' Carry On Wayward Son once more, and it looks like the angel war and the Mark of Cain will take center stage for the season 9 finale.

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Titled "Do You Believe In Miracles," the last episode before the summer hell-atus will see Metatron expand his angel war to include the rest of humanity. While the people of Earth have been featured as civilian casualties of the scribe's heavenly purge, a new summary indicates that the malicious angel will be taking his battle to a whole new level.

At the same time, Castiel (Misha Collins) and Sam Winchester (Jared Padalecki) will be attempting to bring the fight to Metatron's lofty perch, but they will encounter a few unexpected consequences when they do so. As for Dean (Jensen Ackles), his Mark of Cain and his use of the first blade will have him in his own personal war.

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As usual, fans can expect to be left in suspense when the credits roll on the Jeremy Carver penned ep.

"We leave our guys in a situation they've never faced before, which after nine seasons, it kind of narrows it down a little bit," said writer Andrew Dabb, according to E!. "I think once they see the last frame of the last episode, I think people are going to be incredibly excited for Season 10,"

Find out what Team Free Will is up to when supernatural airs Tuesdays at 9 p.m. ET on The CW. Click the video below to see a preview for the series' next episode, "King of the Damned."

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Supernatural, The cw, Television