[SPOILERS] 'Supernatural' Cast, Showrunners on Season 11 Big Bad The Darkness: "We're Working Without a Playbook

Executive producer Jeremy Carver, co-EP Andrew Dabb and stars Jensen Ackles, Jared Padalecki, Misha Collins and Mark Sheppard dish on what to expect from the Big Bad to Sam and Dean's "united front" and more.

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