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.
| Title | When the Levee Breaks |
|---|---|
| Genres | Drama Mystery Sci-Fi & Fantasy |
| Release Date | 2009-05-07 |
| Episode Runtime | 00 Hours 45 Minutes |
| Season Number | 4 |
| Episode Number | 21 |
| Production Companies | Kripke Enterprises, Supernatural Pictures, Wonderland Sound and Vision, Warner Bros. Television |
