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Season guide

Lost: Season 4

13 episodes Premiered Jan 31, 2008 Updated Oct 1, 2026

Lost is an American science fiction adventure drama television series created by Jeffrey Lieber, J. J. Abrams, and Damon Lindelof that aired on ABC. The fourth season of Lost continues the overarching saga across thirteen episodes. The series follows the survivors of a horrific plane crash, specifically the survivors of Oceanic Air Flight 815, who find themselves stranded and stripped of everything. As the mystery dr

Previously on Lost

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ The series is an American science fiction adventure drama television series created by Jeffrey Lieber, J. J. Abrams, and Damon Lindelof.
  • ⚡ The show aired on ABC from September 22, 2004, to May 23, 2010, spanning a total of 121 episodes over six seasons.
  • ⚡ The narrative begins following a horrific plane crash involving Oceanic Air Flight 815.
  • ⚡ The survivors of the crash find themselves stranded and stripped of everything as mysteries abound.
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Season overview

Lost is an American science fiction adventure drama television series created by Jeffrey Lieber, J. J. Abrams, and Damon Lindelof that aired on ABC. The fourth season of Lost continues the overarching saga across thirteen episodes. The series follows the survivors of a horrific plane crash, specifically the survivors of Oceanic Air Flight 815, who find themselves stranded and stripped of everything. As the mystery drama continues, mysteries abound for the stranded characters who must work together across the episodes of the fourth season.

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Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

31%
69%
Mytharc (4): Crucial lore & season climaxes
Core (9): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

The Beginning of the End

Jan 31, 2008 · 43 min

They thought they had met the enemy. They thought they had seen evil. They thought wrong. As the new season begins, the survivors feel that rescue is close at hand, but they don't

S4·E2 Core

Confirmed Dead

Feb 7, 2008 · 43 min

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

S4·E3 Core

The Economist

Feb 14, 2008 · 43 min

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.

S4·E4 Core

Eggtown

Feb 21, 2008 · 43 min

Kate needs to get information out of the hostages, but it may jeopardize her standing with Locke -- as well as with Sawyer. Meanwhile in the future Kate's Court hearings take place

S4·E5 Mytharc

The Constant

Feb 28, 2008 · 43 min

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

S4·E6 Core

The Other Woman

Mar 6, 2008 · 43 min

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

S4·E7 Core

Ji Yeon

Mar 13, 2008 · 43 min

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 an idea of the freighter's crew when the

S4·E8 Core

Meet Kevin Johnson

Mar 20, 2008 · 43 min

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.

S4·E9 Core

The Shape of Things to Come

Apr 24, 2008 · 43 min

Jack tries to discover the identity of a body that has washed ashore. Meanwhile, Locke's camp is attacked by Ben's adversaries.

S4·E10 Core

Something Nice Back Home

May 1, 2008 · 43 min

Kate and Juliet must learn to work together when Jack's health is seriously compromised, and something goes wrong as Sawyer, Claire, Aaron and Miles continue their trek away from L

S4·E11 Core

Cabin Fever

May 8, 2008 · 43 min

Locke finds out where Jacob's cabin is. Life on the freighter becomes dangerous.

S4·E12 Mytharc

There's No Place Like Home (1)

May 15, 2008 · 43 min

Sayid goes back to the island to bring the rest of the people to the freighter. Ben, Locke, and Hurley go to another Dharma station in order to "move the island".

S4·E13 Mytharc

There's No Place Like Home (2)

May 29, 2008 · 85 min

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

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