A time shift forces Farraday, Charlotte, Sawyer, Locke and Juliet to encounter The Others in the 1950s; as he attempts to carry out Farraday's directions, Desmond is forced to face Charles Widmore.
The team discovers murder victims with the alien glyphs on them that Coulson's been etching. All of Coulson's secrets and lies come to a head.
This episode serves as the culmination of Catherine's pursuit to track down those that murdered her friend, Grace Huang. Catherine finds Mikel Koslov in Bulgaria and convinces him to come back to Vegas with promises of an immunity deal.
