Flashbacks reveal that Locke lived with The Others, who held his father in captivity. He then wants Sawyer to accompany him to the Black Rock to see his father. His father turns out to be the man Sawyer was looking for, so Sawyer kills him.

In case you’re out of the loop, let me bring you up to speed:  LOST IS BACK.  After a shaky, and for some an unfulfilling, start to season three of LOST followed by a hiatus that shifted attention away from LOST’s slow plotting to the lightening quick story telling of rival Heroes, LOST had to come back strong and sustain it.  Arguably, the beginning of the second, and largest, segment of the third season was not as huge an improvement as the show needed to reclaim its position at the top of pop TV.  Then somewhere around “Flashes Before Your Eyes” something happened.
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