Watch Lost Season 5 Episode 4 online via TV Fanatic with over 6 options to watch the Lost S5E4 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Verizon On Demand.
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Kate discovers that someone knows the secet of Aaron's lineage. Meanwhile, there continues to be dramatic shifts in time, putting the island survivors in peril.