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Supernatural Season 12 Episode 21 "There's Something About Mary" Promo


Supernatural Season 12 Episode 21 "There's Something About Mary" Promo

Sam and Dean are alarmed when they learn hunters are being killed by suspicious “accidents” all over the country in Supernatural Season 12 Episode 21 "There's Something About Mary" airing next week on The CW.

Watch the first promo below! 

Looking for more spoilers? 

Head over to Supernatural Episode Guide: “There's Something About Mary” for the full description of this episode.