Watch Lost Online - Full Episodes

After the Lost finale, past and present cast members discuss their experiences filming and wrapping up the Lost series finale.

In this dramatic Lost series finale, Locke puts his plan into motion. Will he finally be set free from the powers of the island? All your questions answered in the Lost final episode.

While Locke devises a new strategy, Jack's group searches for Desmond.

Locke's intentions are finally brought to light.

Jack's suspicions about Locke make his decision more difficult after he is asked to complete a difficult task.

Alliances are made and broken as the Locke and Jack camps merge.

Hurley worries over what the group should do next, and Locke is curious about the new arrival to his camp.

Desmond wakes up and discovers he has returned to the island.

Sun and Jin desperately continue searching for each other, and Locke confronts his enemy.

Richard Alpert faces a difficult choice.

Locke trusts Sawyer with a mission.

Ben deals with the consequences of an uncovered lie.

Sayid is faced with a difficult decision, and Claire sends a warning to the temple inhabitants.

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

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

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

The aftermath from Juliet's detonation of the hydrogen bomb is revealed.

The aftermath from Juliet's detonation of the hydrogen bomb is revealed.

A review of the series with commentary from cast members.

Kate, Sawyer and Juliet team up with Jack and his crew in order to cause the incident they all so desperately want; Locke takes Richard, Ben, Sun and the rest of the others to confront Jacob.

Kate, Sawyer and Juliet team up with Jack and his crew in order to cause the incident they all so desperately want; Locke takes Richard, Ben, Sun and the rest of the others to confront Jacob.

Featuring clips from previous episodes to get the viewers caught up to the 5th season finale.

Kate, Sawyer and Juliet team up with Jack and his crew in order to cause the incident they all so desperately want; Locke takes Richard, Ben, Sun and the rest of the others to confront Jacob.

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.

Jack and Kate are at odds over the direction to take to save their fellow island survivors, and Locke further solidifies his stance as leader of the Others and Sawyer and Juliet come under scrutiny from the Dharma Initiative.

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.

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.

To atone for sins of the past, Ben must attempt to summon the smoke monster in order to be judged.

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.

Things begin to unravel when one of the survivors goes rogue and takes matters into their own hands -- risking the lives of everyone on the island

After meeting old acquaintances Sawyer is forced to continue lying to protect them.

Sawyer perpetrates a lie to protect the remaining survivors from the mistakes of the past.

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

The way back to the island is revealed to members of the Oceanic 6, but there's trouble ahead when not all of them wish to return.

Locke takes on the burden to stop the island's increasingly violent shifts through time. Meanwhile, Ben hits a roadblock in his attempt to reunite the Oceanic 6.

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.

Desmond goes in search of a woman who could be the key to helping Faraday stop the island's erratic movements through time, and Locke discovers the identity of the unknown forces who have been attacking the survivors.

Hurley and Sayid are hunted down by the cops. Jack and Ben try to bring everyone together as a team. Kate receives help from an old friend to hide the truth.

Several of the Oceanic Six survivors come to grips with their need to return to the island... on their own terms.

A recap of the series' first four seasons explores the island's mysteries and profiles its inhabitants, with a focus on those who were rescued, the Oceanic 6 (Jack, Kate, Hurley, Sayid, Sun and Claire's son, Aaron). The hour also speculates on reasons for Charles Widmore's interest in the island, as well as Ben's motives.

The face-off between the survivors and the freighter people continues, and the Oceanic Six find themselves closer to rescue.

The face-off between the survivors and the freighter people continues, and the Oceanic Six find themselves closer to rescue.

The face-off between the survivors and the freighter people begins.

Locke is enlightened as to the whereabouts of Jacob's cabin, and life aboard the freighter becomes perilous.

When Jack's health is seriously compromised, Kate and Juliet must learn to work together in order to save him; and something goes wrong as Sawyer, Claire, Aaron and Miles continue their trek away from Locke's camp and back to the beach.

Locke's camp comes under attack, and Jack tries to discover the identity of a body that has washed ashore. A Ben-centric episode.

Sayid confronts Ben's spy on the freighter, and Ben urges daughter Alex to flee Locke's camp in order to survive an impending attack. A Michael-centric episode.

Juliet is forced to reveal some startling news to Jin when Sun threatens to move to Locke's camp. Meanwhile, Sayid and Desmond begin to get a.n idea of the freighter crew's mission when they meet the ship's captain. A Jin/Sun-centric episode.

Juliet receives an unwelcome visit from someone from her past and is given orders to track down Charlotte and Faraday in order to stop them from completing their mission -- by any means necessary. Meanwhile, Ben offers Locke an enticing deal. A Juliet-centric episode.

Sayid and Desmond hit a bit of turbulence on the way to the freighter, which causes Desmond to experience some unexpected side effects. A Desmond-centric episode.

Kate's need to get information out of the hostage may jeopardise her standing with Locke -- as well as with Sawyer. A Kate-centric episode.

Locke's hostage may be the key to getting off the island, so Sayid and Kate go in search of their fellow castaway in an attempt to negotiate a peaceful deal. A Sayid-centric episode.

The survivors begin to question the intentions of their supposed rescuers when four strangers arrive on the island.

Feeling that their rescue is close at hand, the survivors don't know whether to believe Charlie's final message that the people claiming to liberate them are not who they seem to be.