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Walt's father, Michael (Harold Perrineau), is very unhappy with the close friendship that is developing between the somewhat creepy survivalist Locke (Terry O'Quinn) and Walt, and tries to put an end to it. And, once again, a ferocious animal that is unfit for tropical climates makes an appearance in the jungle...this time attacking young Walt (Malcolm David Kelley) when he runs off on his own after yet another disagreement with Michael. Flashbacks in this episode give insight into the strained relationship between Michael and Walt -- and indicate that there may be something "different" about the boy. In other events on the island, Shannon (Maggie Grace) finally starts to use her knowledge of French to help Sayid (Naveen Andrews), and Charlie (Dominic Monaghan) wants to know much, much more about the still-missing Claire (Emilie de Ravin).