Watch Supernatural Season 4 Episode 21 online via TV Fanatic with over 8 options to watch the Supernatural S4E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, Netflix, YouTube Purchase, Google Play, TNT, and Verizon On Demand.

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Episode Details

Dean and Bobby lock Sam in Bobby's panic room in order to let him detox from demon blood.

Show:

Supernatural

Season:

Supernatural Season 4

Episode Number:

21

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