Live Together, Die Alone

Locke sees the light after having a good 'boomer racial anxiety' cry. Desmond has another shot with his long lost love but decides to go sailing with her dad instead. Sayid prays, a thing he has been doing off-screen for the previous 47 episodes. It's the Season 2 finale, and though the boys have come a long way, they're not even halfway through this long descent into madness.
Lost talk starts at 4:00