There is a lot of running around on the Island as the search party looks for Claire, Charlie and Ethan. Nothing much happens in this department till the very end when Jack and Kate find Charlie, hanging from a Tree and revive him. Most of this episode is really about Jack and his relationship to his father as we get a lot of flashbacks to flesh his story out more. Still a great episode in spite of the lack of forward movement with the story on the Island. Charlie does reveal that there are others and Locke and Boone discover what will eventually be the Hatch in the ground.