Episode Description: Beware, spoilers! To read - hover over the text.
In 1997, the survivors inadvertently blow up a hydrogen bomb, this turn of events leads to terrible consequences for some of the characters. In 2007, the year that Locke, along with other sent to the four-toed sculpture base, where the hut of Jacob. Locke turns out to be a traitor, he's an old friend Jacob, whom Ben is going to kill on the orders of Locke. In flashback we are shown Jacob's, where he meets alternately with the main characters.