Jack, Kate and Sawyer are kidnapped by the Others, who reveal themselves as more sophisticated and savvy than anyone guessed.

Sayid's attempt to rescue Jack, Kate, and Sawyer from the others jeopardizes Sun and Jin's lives. Ben makes Jack an offer which may be too hard to refuse.

Locke experiences visions of Boone, leading him to a new mystery on the island.

The Others perform a sadistic medical procedure on Sawyer in order to prevent him from causing any more mischief.

After Mr. Eko has a vision of his dead brother, he sets out to return to the site of his plane crash.

Kate desperately tries to protect Sawyer from The Others. Juliet uses her as a pawn on Jack to get him to perform surgery on Ben.

Sawyer and Kate struggle to escape the island while Jack sabotages Ben's surgery. Juliet's deal with Jack to kill Ben on the operating table is exposed.

After Desmond saves Claire from drowning, Charlie and Hurley suspect that he can see the future, so they come up with a plan to get some answers out of him.

A power play ensues between Jack and Ben as Juliet's future lies in the balance. Kate and Sawyer deal with the consequences of their escape.

Having returned to camp, Sawyer's help is enlisted by Hugo, who has an obsession with retrieving an old VW van found on the island. More events in Hugo's life are also revealed, showing what brought him to be on the doomed flight.

Sayid, John and Kate find another Dharma station on their way to rescue Jack. In the meantime Sawyer tries to get his stuff back in the camp.

Claire launches a plan to use migratory birds to send a message, but Desmond keeps sabotaging it. Sayid, Locke, and Kate scale The Others' protective perimeter and discover their camp.

Jack tells Kate that he has made a deal with The Others; Locke hinders Jack's plan to leave the island.

Nikki and Paulo are two more of the castaways with a past just like any of the others. What have they been doing since the plane crash?

With their secret location now compromised, The Others abandon camp and take Locke with them. But they also leave Juliet behind, handcuffed to Kate in the middle of the jungle.

Jack takes Juliet back to their camp after being abandoned by The Others. However, nobody else at the camp trusts her or wants her there.

After Desmond has another vision, he convinces Hurley, Jin, and Charlie to follow him into the jungle.

An unlikely person helps Desmond save the life of the mysterious woman who crashed onto the island, and Juliet helps Sun find out whether she conceived on the island or before the plane crash.

Locke needs to prove himself to Ben before he can be accepted into the Others' group and tricks Sawyer into doing his dirty work for him. The secret of the woman who parachuted onto the Island is revealed.

As Ben takes Locke to see Jacob and reveal the island's secrets, Ben's background on the island is exposed--as well as what happened to the Dharma Initiative.

Desmond has another vision of Charlie's death, but this time his death ultimately will result in Claire's rescue. Meanwhile, the survivors discover that an attack by the others is even more imminent than originally expected.

Jack and the survivors wait for Charlie to turn off The Others' signal-jamming device, not knowing that he has been captured at the Looking Glass station.