Genre: Mystery

Locke's mission off the island as Jeremy is revealed.

The members of Oceanic 6 discover how to get back to the island, but not all of them want to return.

Locke shoulders the burden of ending the island's increasingly violent movements through time; Ben is stymied in his efforts to reunite the Oceanic 6 and bring them back to the island.

Kate discovers that someone knows the secret of Aaron's true parental lineage. Meanwhile, the dramatic shifts through time are placing the lives of the remaining island survivors in extreme peril.