Episode 6 of Season 3 is the "fall finale" since no new episodes will be aired until February 2007. The 迷失 producers say that the first 6 episodes of season 3 form a mini story arc. Here's some speculation and spoilers about the fall finale.
Stephen Williams was formerly a director and directed many episodes including Further Instructions, Every Man for Himself, Not in Portland, Enter 77,Exposé, Catch-22 and Greatest Hits