S4·E21 When the Levee Breaks
- Episode
- Season 4, Episode 21
- Air Date
- May 7, 2009
- Runtime
- 43 minutes
- Director
- Robert Singer
- Writer
- Sera Gamble
- Score
- 8.1/10 (39 TMDB votes)
- Story Type
- Main Arc (Crucial)
Narrative Classification: Pre-finale climax accelerating overarching mythology and major character reckonings.
Synopsis
Dean and Bobby have something frightening locked in Bobby's panic room: Sam, who is corrupted by demon blood. With the apocalypse drawing nearer, Bobby wants to free Sam to fight on their side.
Episode recap
In this episode of Supernatural, Dean and Bobby have something locked in Bobby's panic room. This entity is a result of Sam being corrupted by demon blood. As the apocalypse draws near, Bobby wants to free Sam to fight on their side.
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Director & writers
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Frequently Asked Questions
When did Season 4 Episode 21 of Supernatural air?
Season 4, Episode 21 ('When the Levee Breaks') originally aired on May 7, 2009.
How long is Season 4 Episode 21 ('When the Levee Breaks')?
The runtime for this episode is approximately 43 minutes.
What happens in Supernatural Season 4 Episode 21?
Dean and Bobby have something frightening locked in Bobby's panic room: Sam, who is corrupted by demon blood. With the apocalypse drawing nearer, Bobby wants to free Sam to fight on their side....
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