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08/31 - The season opener, "Man of Science, Man of Faith," a Jack-centered story, will introduce Desmond (to be played by Henry Ian Cusick), described as an avid daredevil who gets his kicks climbing the world's biggest mountains alone. Equal parts charismatic and gregarious and austere and zealous, it is unclear how Desmond will play into this season, but expect to see more of him as the story progresses.