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Looking to watch Supernatural Season 4 Episode 21 online? TV Fanatic is your destination for every paid and free streaming option of the Supernatural S4E21 full episode from 2 affiliates.

Rating: 4.3 / 5.0 (3 Votes)

Episode Details

Supernatural Season 4 Episode 21: "When the Levee Breaks"

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