Lost Season 5 Episode 16: The Incident (Part 1)
In 1977, the survivors succeed in detonating the hydrogen bomb core at the construction site of the Swan station, with dire consequences for several characters. In 2007, Locke and the Others travel to the base of the four-toed statue, where Jacob lives. Locke is revealed to be an impostor: an old acquaintance of Jacob’s, who tricks Ben into killing Jacob. In flashbacks, Jacob visits several of the main characters.