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Supernatural — Season 4, Episode 21
When the Levee Breaks
Season 4,
Episode 21
• Aired 2009-05-07
• 43 min
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.
-
Jared Padalecki
as Sam Winchester -
Jensen Ackles
as Dean Winchester -
Misha Collins
as Castiel
-
Misha Collins
as Castiel -
Colin Ford
as Young Sam Winchester -
Julie McNiven
as Anna Milton -
Christopher Heyerdahl
as Alastair -
Juliana Wimbles
as Demon Nurse -
Joey Bothwell
as Nurse -
Genevieve Padalecki
as Ruby -
Samantha Smith
as Mary Winchester -
Jim Beaver
as Bobby Singer
Writer:
Sera Gamble
Director:
Robert Singer