The next day, the party returns. Kate secretly tells Jack about the distress signal. Mars's condition worsens, and while Jack searches the fuselage for antibiotics, Kate visits him in the makeshift medical tent. Mars awakens and grabs her by the throat before going into shock. Kate asks Jack to euthanize him, but Jack refuses, saying that he saw her mugshot and that he "is not a murderer." Elsewhere, Michael gets bothered by Walt talking with the enigmatic John Locke, and instructs him to stay away from the man.