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Supernatural - Season 4 Episode 21 : When the Levee Breaks (2020)
 
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Rated: 7.5 out of 10 with 2239 votes.
Dean and Bobby have something frightening locked in Bobby's panic room: Sam, contaminated by demon blood. But as the apocalypse draws nearer, Bobby wants to free Sam to battle on their side.
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Seasons: 15Episodes: 320 7.5 TV-MA Trailer
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Main Actors:
Dean Winchester
Sam Winchester
Belphegor
Castiel
TV Network:The WB, The CW
Alternative Titles:邪恶力量, Doğaüstü
Release Date:Jan 01, 1970
Last Air Date:Jan 30, 2020
Number of Seasons:15
Number of Episodes:320
Genres:Drama, Mystery, Sci-Fi & Fantasy
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Season: 4
320 Episodes from Sep 13, 2005 until Jan 30, 2020
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Supernatural - Season List:
Season 1
2005-09-13
Season 2
2006-09-28
Season 3
2007-10-04
Season 4
2008-09-18
Season 5
2009-09-10
Season 6
2010-09-24
Season 7
2011-09-23
Season 8
2012-10-03
Season 9
2013-10-08
Season 10
2014-10-07
Season 11
2015-10-07
Season 12
2016-10-13
Season 13
2017-10-12
Season 14
2018-10-11
Season 15
2019-10-10