jack fail to save a survivor from drown and then begin to see vision of his dead father . he wander off into the wood and almost dy . locke save him but tell him to stay the journey and and to find closure . locke then go off to kill some more game . what jack ultimately find be an empty coffin and a source of water and which the survivor be now out of . he return to the beach and strong than before and definitely in command . flashback reveal his tortured relationship with his father and who die of heart failure while visit down under . the business with dad be play out a little too long and for my taste . otherwise and a heck of an episode .