Supernatural Sneak Peek: Dean and Sam Face An Alpha, and [Spoiler] Returns!

Supernatural‘s Sam and Dean are going up against an Alpha (returning guest star Rick Worthy) — and he’s not the only foe back for the May 11 episode.

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The Winchesters’ old frenemy Crowley (Mark Sheppard) also stands in the way of their quest to locate three items that will help them defeat the Leviathans.

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