On the island, Jack, Kate, Sawyer and Hurley set out in search of Desmond, but they meet Jacob. And Ben, Miles and Richard confront Widmore---then the Locke Monster---at the Others'... Full summary
Locke's motives become clear in an episode tracing the early years of Jacob and the Man in Black, who are raised on the island by the woman (Allison Janney) who delivers them minutes... Full summary
The Locke Monster, Sayid and Jack venture to Hydra Island to rescue the castaways held by Widmore. Their goal is to get to the Ajira jet, but Jack says that he's not meant to go. And in... Full summary
The Locke monster's camp merges with Jack's ("I think we have some catching up to do," Locke says), and alliances are forged and broken. Meanwhile, Zoe shows up at the camp, and... Full summary
On the island, Sayid brings Desmond to the Locke monster's camp; and Ilana plans a Hydra Island raid, but before they set out, Michael (Harold Perrineau) appears in a vision to Hurley.... Full summary
Desmond (Henry Ian Cusick) awakens and discovers, to his horror, where he is and how he got there. "The island isn't through with you," Widmore tells him. In L.A., Desmond, an... Full summary