Many fans are still hoping Supernatural season 16 will eventually happen, and although the Supernatural finale seemingly left little room for a reboot, Castiel actor Misha Collins has pitched a brilliant way the show could return. 10 years after the original Supernatural ending , the season 15 finale brought the show to an end with a series of shocking moments.

From Dean's death to the revelation that Jack had completely restructured Heaven, Supernatural's final episode was full of surprises (some more popular than others), but it also felt conclusive, in part because the finale showed Sam's life on Earth for decades, from his time as a father to his death as an old man.

Given that we see Sam age, seemingly without any further contact from those who have already died, it'

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