Plot summary
Two months before his death, Locke arrives in Tunisia and Widmore helps him locate the Six, assigning Matthew Abaddon to assist him. His friends reject him, and he decides to not ask Walt. He asks after Helen Norwood and is taken to her grave, where Abaddon is shot and killed. Locke gets in a car crash while fleeing and is taken to Jack's hospital, where he tells him about seeing Christian but fails to convince him. Locke decides to kill himself, but Ben, having killed Abaddon, intervenes and tells him their conversation changed Jack's mind. When Locke mentions Eloise, Ben kills him and stages it as suicide. In the present, Flight 316 crashes on Hydra Island and Locke comes back to life. A passenger notes that Jack, Hurley, Kate, and Sayid vanished from the flight before the crash, and Locke finds Ben in the sick bay.
Credits
Adapted from Wikipedia contributors, Lost season 5. HTML formatting and reference markers removed.