Supernatural (2009) – Season 4 Episode 21:
When the Levee Breaks


Watch Supernatural Season 4 Episode 21 (May 07, 2009) – "When the Levee Breaks" online

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Supernatural Season 4 Episode 21 - When the Levee Breaks (2009)
8.2/10from 26 votes
TitleSupernatural
GenreDrama, Mystery, Sci-Fi & Fantasy
Air Date2009-05-07
Season4
Episode21
OverviewWhen they were boys, Sam and Dean Winchester lost their mother to a mysterious and demonic supernatural force. Subsequently, their father raised them to be soldiers. He taught them about the paranormal evil that lives in the dark corners and on the back roads of America ... and he taught them how to kill it. Now, the Winchester brothers crisscross the country in their '67 Chevy Impala, battling every kind of supernatural threat they encounter along the way.
Stars
  • Jared Padalecki (Sam Winchester)
  • Jensen Ackles (Dean Winchester)
SubtitlesArabic, Basque, Catalan, Croatian, Czech, Danish, Dutch, English, Filipino, Finnish, French, French Canadian, Galician, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Romanian, Russian, Simplified Chinese and Traditional Chinese, Spanish, Swedish, Tamil, Thai, Turkish, Ukrainian and Vietnamese.

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 Andrew MillerRating: 8.6/10
2025-06-18 — Season 5, Episode 26

Every episode is filled with tension and depth.

 David BrownRating: 8.6/10
2025-06-04 — Season 1, Episode 4

Rich scenes and satisfying tension building.

 Sophia MartinezRating: 9.4/10
2025-06-20 — Season 1, Episode 27

Fantastic cast and direction that dives into characters.

 Emily JohnsonRating: 9.4/10
2025-07-01 — Season 9, Episode 37

A powerful and well-written show tackling complex themes.

 Natalie WilsonRating: 9.4/10
2025-06-30 — Season 2, Episode 4

Engaging plotlines and breathtaking visuals...

 Michael LeeRating: 8.8/10
2025-06-23 — Season 6, Episode 39

An outstanding TV series with deep emotional storytelling, brilliant acting, and twists that keep you coming back.

 Daniel WrightRating: 9.4/10
2025-06-20 — Season 8, Episode 30

Great production quality and immersive cinematography that develops over time.

 Andrew MillerRating: 9/10
2025-06-18 — Season 5, Episode 16

Every episode is filled with tension and depth.

 Michael LeeRating: 9.4/10
2025-06-06 — Season 2, Episode 2

Fantastic cast and direction that dives into characters.

 Andrew MillerRating: 8.8/10
2025-06-06 — Season 3, Episode 27

An outstanding TV series with deep emotional storytelling, brilliant acting, and twists that keep you coming back.

 Grace HallRating: 9.3/10
2025-06-28 — Season 5, Episode 41

Great production quality and immersive cinematography that develops over time.

 David BrownRating: 9.4/10
2025-06-07 — Season 7, Episode 31

Pushes boundaries while maintaining emotional sincerity.

 Amanda ScottRating: 9.3/10
2025-06-16 — Season 1, Episode 25

Every season adds layers to a deep narrative.

 Natalie WilsonRating: 8.7/10
2025-06-08 — Season 1, Episode 31

Pushes boundaries while maintaining emotional sincerity.

 Emily JohnsonRating: 9.5/10
2025-06-17 — Season 8, Episode 24

Sharp writing and phenomenal ensemble performances.

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