Locke's hostage may be the key to getting off the island, so Sayid and Kate go in search of their fellow castaway in an attempt to negotiate a peaceful deal.

The survivors begin to question the intentions of their supposed rescuers when four strangers arrive on the island.

As the new season begins, the survivors feel that rescue is close at hand, but they don't know whether or not to believe Charlie's final message that the people claiming to liberate them are not who they seem to be. As unlikely al...

When Oceanic Flight 815 crashed on an island in the middle of the Pacific, each survivor was given a choice to live together or die alone. Thrown together in this mysterious place, they have struggled to overcome shadows from their past in ...

Ben confronts Jack, claiming that Naomi is not who she seems. Meanwhile, Sawyer and Juliet try to come up with a plan to rescue the hostages at the beach.Inside the Looking Glass, Charlie and Desmond struggle to find a way to shut off the b...

The ambush for the Others goes awry and ends with Sayid, Jin, and Bernard getting captured.Ben is informed of Charlie's presence in the Looking Glass station and sends Mikhail to "clean up" the situation.He then embarks with ...

Charlie makes a list of the best moments of his life. Once again, Desmond has foreseen his death, but this time Charlie Decemberides to face it head on. Jack devises a plan to fight back when the Others arrive, but unexpected developments j...

Locke confronts Ben and demands that Ben take him to Jacob. Ben complies, but the answers Locke receives are not what he expected. Ben remembers his childhood on the Island, revealing the history of the Dharma Initiative and how the Others ...

After abandoning the Others, Locke takes Sawyer on a trek through the jungle to help him eliminate a common enemy. Meanwhile, back at the beach, the parachutist Naomi has crucial information about flight 815.

Sun learns what happens to pregnant women on the island. Juliet takes her to the Staff in order to learn the baby's D.O.C. (Date of Conception). Sun recalls how she learned about Jin's parents. Meanwhile, the woman who dropped fro...

Desmond convinces Hurley, Jin, and Charlie to follow him on a trek through the jungle after he receives a series of visions. Flashbacks reveal the time that Desmond spent with a cloister of monks. Meanwhile, a despondent Kate turns to Sawye...

Jack returns, but no one is in the mood for celebrating when they see that Juliet has come back with him. As Juliet struggles to find a way to be accepted, flashbacks show how she came to the island and what she was doing during those three...

The Others are vacating their home, and one of the castaways is leaving with them. Kate is knocked out and wakes up in the jungle handcuffed to Juliet. Kate is determined to return to get Jack, while Juliet believes she has been abandoned. ...

When both Nikki and Paulo apparently die, the rest of the castaways try to figure out what happened to them. In the course of the investigation, the truth about Sun's "kidnapping" comes to light. Flashbacks show what Nikki an...

When Kate and Locke arrive at the Others' camp, Ben promises to tell Locke the island's secrets as long as he stops his destructive plan, and Kate's reunion with Jack doesn't go very well when she learns that the Others ...

Claire has an idea to send a message to the outside world. Charlie, however, is resistant to the idea, and Desmond tries to sabotage the plan. As Claire tries to get the truth behind their actions out of the pair, she remembers traumatic ev...