That Sinking Feeling
Jack made a deal with Ben to leave the island on a submarine. He'll return to save everyone else. But John Locke believes it would be a mistake to leave the island. So he blows up the sub. Ben realizes that John Locke has a oneness with the island. He takes him into a room where a man is being held hostage. That man is Locke's father. He's also the man responsible for putting him in a wheelchair years ago. This could be payback time.