In "Man of Science, Man of Faith," the first episode of season two of Lost, Jack Shephard runs a tour de stade in a flashback where he meets Desmond Hume for the first time.
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Later, Juliet and Ben enter the Pearl station, where they watch Jack Shephard (Matthew Fox) from one of the monitors.
On the sailboat, Sun, Jin-Soo Kwon (Daniel Dae Kim), and Sayid Jarrah (Naveen Andrews) argue about what to do because Jack Shephard's (Matthew Fox) party has not shown up; Sun goes against her husband's wishes and agrees with Sayid to sail to a new location.
Widmore pledges to help Locke reunite the Oceanic Six—Jack Shephard (Matthew Fox), Kate Austen (Evangeline Lilly), Sayid Jarrah (Naveen Andrews), Sun-Hwa Kwon (Yunjin Kim), Hugo "Hurley" Reyes (Jorge Garcia) and Claire Littleton's (Emilie de Ravin) son, Aaron—in order to take them back to the island.
Outside the Others' compound, Locke, Sayid Jarrah (Naveen Andrews), Kate Austen (Evangeline Lilly) and Danielle Rousseau (Mira Furlan) are shocked to see Jack Shephard (Matthew Fox) interacting familiarly with the Others, and Kate insists that the Others have done something to him.