1. Because You Left
Aired Jan 22, 2009 · 43 minutes
The remaining island survivors start to feel the effects of the aftermath of moving the island, and Jack and Ben begin their quest to reunite the Oceanic 6 in order to return to the island with Locke's body in an attempt to save their former fellow castaways.
2. The Lie
Aired Jan 22, 2009 · 42 minutes
Hurley and Sayid are on the run from the cops after stumbling into trouble at the safehouse; the island survivors come under attack by unknown forces; and an old friend offers some shocking advice to Kate in order to ensure that "the lie" remain a secret.
3. Jughead
Aired Jan 29, 2009 · 43 minutes
Desmond looks for a woman who might be the key to helping Faraday stop the island's unpredictable movements through time; Locke finds out who has been attacking the survivors.
4. The Little Prince
Aired Feb 5, 2009 · 43 minutes
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.
5. This Place Is Death
Aired Feb 12, 2009 · 43 minutes
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.
6. 316
Aired Feb 19, 2009 · 43 minutes
The members of Oceanic 6 discover how to get back to the island, but not all of them want to return.
7. The Life and Death of Jeremy Bentham
Aired Feb 26, 2009 · 46 minutes
Locke's mission off the island as Jeremy is revealed.
8. LaFleur
Aired Mar 5, 2009 · 43 minutes
Sawyer perpetuates a lie with some of the other island survivors in order to protect themselves from mistakes of the past.
9. Namaste
Aired Mar 19, 2009 · 43 minutes
After meeting old acquaintances Sawyer is forced to continue lying to protect them.
10. He's Our You
Aired Mar 26, 2009 · 43 minutes
Everyone on the island is at risk when one of the survivors decides to go against them and taking matters into their own hands.
11. Whatever Happened, Happened
Aired Apr 2, 2009 · 43 minutes
Kate goes to extreme measures to save Ben's life when Jack refuses to help. Meanwhile, Kate begins to tell the truth about the lie in order to protect Aaron.
12. Dead Is Dead
Aired Apr 9, 2009 · 43 minutes
To atone for sins of the past, Ben must attempt to summon the smoke monster in order to be judged.
13. Some Like It Hoth
Aired Apr 16, 2009 · 43 minutes
Suspicions about a possible breach intensify after Ben is taken from the infirmary, and a reluctant Miles is forced to work with Hurley when he's asked to deliver an important package to a top Dharma official.
14. The Variable
Aired Apr 30, 2009 · 43 minutes
On the 100th episode milestone for the series, the time of reckoning has begun when Daniel Faraday comes clean regarding what he knows about the island.
15. Follow the Leader
Aired May 7, 2009 · 43 minutes
Jack and Kate find themselves at odds over the direction to take to save their fellow island survivors, Locke further solidifies his stance as leader of "The Others," and Sawyer and Juliet come under scrutiny from the Dharma Initiative.
16. The Incident (1)
Aired May 14, 2009 · 46 minutes
Jack's decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke assigns Ben a difficult task.
17. The Incident (2)
Aired May 14, 2009 · 42 minutes
Jack's decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke assigns Ben a difficult task.