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Jacob appears to the survivors of the submarine explosion and tells them what they were chosen for, while Ben joins forces with Locke as they both have a final showdown with Charles Widmore.

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The motives of John Locke are finally explained.

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With Jack’s help, Locke rescues the candidates from Widmore’s compound, but their plans for leaving the island are forced to change. In Los Angeles, Jack tries to convince Locke to try an experimental surgery for his paralysis.

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As the battle between Locke and Widmore commences, Sawyer launches his plan to change allegiances. Back in Los Angeles, fate continues to intervene and bring the original survivors together.

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Michael appears to Hurley and gives him a new mission, and Sayid captures Desmond and sends him to Locke. In Los Angeles, Desmond sets up a meeting between Libby and Hurley to further his assignment.

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Charles Widmore brings Desmond back to the island so that he can conduct a dangerous electromagnetic experiment, which sends him back to the alternate reality in Los Angeles, a reality where he has never met Penny.

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Sun and Jin’s search for each other is interrupted when Widmore’s crew kidnaps Jin, and Locke heads to the other island to bring him back. In Los Angeles, Jin’s job for Sun’s father is sidetracked when his money is taken at customs.

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The mysteries behind Richard Alpert’s arrival to the island, his immortality, and his alliance with Jacob are revealed–plus more details about the purpose of the island and the relationship between Jacob and the smoke monster.

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Locke sends Sawyer on a recon mission to the other island, where he runs into Charles Widmore and his submarine crew. In Los Angeles, Sawyer works as a police officer obsessed with finding the conman who destroyed his family.

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Ilana prepares to kill Ben after Miles reveals that Ben killed Jacob. In Los Angeles, Ben contemplates a power play at his high school. Meanwhile Richard and Jack share their secrets and experiences with Jacob and form an alliance.

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Claire arrives at the temple and warns the inhabitants that the being inhabiting Locke wants to talk, but Dogen sends Sayid to kill him instead. In Los Angeles, Sayid saves his brother, who is in trouble with a loan shark.

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