S2, E13: ABC once again invites new and avid Lost viewers to take another look at one of the most talked about and critically acclaimed shows. "LOST: Final Chapter" will explore the series in a way that will bring new viewers up to date—but which current viewers will also find illuminating—in anticipation of the final season of LOST. The special will take a look at the crash of Oceanic Flight 815, the mysteries of the island, its inhabitants, the Oceanic 6, the violent shifts through time on the island and the detonation of the hydrogen bomb. It will also delve into some of the questions that have been answered, and those that still remain a mystery.