All Along The Watchtowersupernatural : Season 1... -

: It finally resolves the pregnancy of Kelly Kline with the birth of Jack , a character who becomes central to the series' remaining seasons.

: The episode leaves Sam and Dean at their most vulnerable, losing their mother Mary to the rift and standing over the bodies of their closest allies. Supernatural - All Along the Watchtower - Kneel Before Blog All Along the WatchtowerSupernatural : Season 1...

: The episode features the heartbreaking deaths of major characters, including Crowley , who sacrifices himself to trap Lucifer, and Castiel , who is shockingly killed by Lucifer. : It finally resolves the pregnancy of Kelly

: The story introduces a "tear in space-time" leading to an alternate reality —a bleak world where the Winchesters were never born and the war between angels and demons has devastated the planet. : The story introduces a "tear in space-time"