The hatch is open, the boy has been taken, and everything is thrown into chaos. Locke risks his life to enter the hatch, leaving Jack in a hard position: Go after him and possibly save his life, or go back to the castaways and lead them through the night? Sayid heads down to the beach to make sure it's safe, Kate has a fearsome encounter, and we see a familiar face...
2x02: Trapped (Hurley-centric)
2x03: Dead or Alive (Sawyer-centric)
2x08: The Plan