: After Desmond Hume "uncorked" the Source, rendering the Man in Black mortal, Jack and Kate managed to kill him.

: Jack, mortally wounded, sacrificed his life to turn the light back on, ensuring the world’s survival and allowing his friends to escape on the Ajira plane . Legacy and Reception

The final season of (Season 6) remains one of the most debated finales in television history. Airing in 2010, it attempted to weave together six years of island mysteries, character redemptions, and mythological lore. The "Flash-Sideways" Narrative

: Jack Shephard eventually accepted his role as Jacob’s successor to protect the "Heart of the Island"—the Source of Light.

On the Island, the conflict reached its peak between and The Man in Black (in the guise of John Locke).