Lost: Ab Aeterno (air date 03/23/2010)

Richard Alpert faces a difficult choice.

Lost: Recon (air date 03/16/2010)

Locke trusts Sawyer with a mission.

Lost: Dr. Linus (air date 03/10/2010)

Ben deals with the consequences of an uncovered lie.

Lost: Sundown (air date 03/02/2010)

Sayid faces a difficult decision, and Claire sends a warning to the temple inhabitants.

Lost: Lighthouse (air date 02/23/2010)

Hurley must convince Jack to accompany him on a mission, and Jin comes across an old acquaintance.

Lost: The Substitute (air date 02/16/2010)

Locke goes in search of aid to further help his cause.

Lost: What Kate Does (air date 02/09/2010)

Kate finds herself on the run, while Jack is tasked with something that could put a friend's life at risk.