Lost: Exodus (Parts 2 & 3)

Danielle Rousseau kidnaps Claire's baby for the "others," but he is recovered by Sayid and Charlie. Claire decides to name him Aaron. The raft is attacked by the "others" and it turns out that Walt, not Aaron, is the child they were searching for. They kidnap him and set the raft on fire. The hatch is finally blown, but what is inside only raises more questions. And there is one final glimpse of the monster.