Desmond's return to the island opens up a whole box of revelations---particularly about life prior to his "race" and what went on during his three years inside the Swan Hatch. Meanwhile, Jack, Kate, Sawyer and Hurley go off toward the Others in search of Walt as Sayid, Sun and Jin begin reconnaissance of the north shore. As Locke and Eko battle over the "108 minute" button, Desmond comes to a startling conclusion about the crash of Flight 815 and the purpose of the Swan Hatch. In the jungle, Michael's betrayal is revealed as Jack, Kate, Sawyer and Hurley are taken captive by the Others, and Sayid discovers the truth about the north shore camp. A Desmond-centric episode.