[s4e21] When The Levee Breaks 〈iPhone〉

: During withdrawal, Sam suffers intense hallucinations, seeing himself tortured by the demon Alastair , being accused of betrayal by his 14-year-old self , and receiving misguided encouragement from a vision of his mother, Mary .

: Portrayed as a "villain protagonist" struggling with a supernatural addiction he believes is necessary to kill Lilith and stop the apocalypse. [S4E21] When the Levee Breaks

: Chooses to swear an oath of fealty to God and the angels, believing it is the only way to save Sam from becoming a monster. " When the Levee Breaks " is the

" When the Levee Breaks " is the 21st episode of Supernatural 's fourth season and the 69th episode overall. Premiering on May 7, 2009, it serves as the penultimate episode of the season, directly setting the stage for the apocalypse. : During withdrawal