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"" is the climactic Season 4 finale of Supernatural , originally aired on May 14, 2009. This guide provides a summary of the critical plot developments, technical specifications, and viewing options for this landmark episode. Episode Overview

: Lilith herself is the final seal; her death at the hands of the "chosen" (Sam) is the trigger that releases Lucifer from his cage. Supernatural.S04E22.Lucifer.Rising.1080p.BluRay...

You can access this episode through various major streaming and digital retail platforms: "" is the climactic Season 4 finale of

: As the Apocalypse approaches, Sam and Dean take divergent paths to stop it. Sam and Ruby hunt for Lilith to break the final seal, while Dean is held in "protective custody" by the angels, only to discover their true, devastating intentions for the world. originally aired on May 14