Lost

A sudden plane crash leaves survivors stranded on a jungle island.

Jack tends to a wounded man who reveals a secret about Kate.

Kate flashes back to when she was arrested by the marshal in Australia.

A shocking secret about Locke is revealed.

A pregnant Claire's health takes a bad turn from lack of fluids.

Locke discovers Charlie's secret.

Survivors struggle to free Jack when he's buried alive in a cave collapse.

In flashback we hear Sawyer's story and find he is not who he says he is.

We flash back to Sayid's childhood friend Nadia.

Flashbacks reveal Claire's backstory.

Boone and Locke discover another island mystery.

A rising tide threatens to engulf the entire beach encampment.

Kate is puzzled by the revelation that Sun can speak English.

Sayid enlists Shannon to help decipher the French woman's map.

Ethan threatens to kill other survivors unless Claire is returned to him.

A shocking connection between Sawyer and Jack is revealed in a flashback.

Sun stuns her fellow survivors with a surprising revelation.

Hurley flashes back to the experience he had before boarding the plane.

Locke thinks he's being sent a sign on how to get the hatch open.

Claire unexpectedly goes into labor while deep in the forest.

Sayid engages Locke to uncover the truth about Boone's death.

A secret from Kate's past is revealed to the other survivors on the island.

The Frenchwoman shows up with a dire warning about "The Others.''

Something unexpected at sea surprises those on the raft.

A visitor to the encampment could be a threat to Claire's infant son.