White Rabbit

Jack is nearly delirious from lack of sleep and struggles to overcome the haunting events that brought him to Australia and, subsequently, to the island. Meanwhile, Boone gets caught in a treacherous riptide trying to save a woman who went out swimming. A pregnant Claire's health takes a bad turn from lack of fluids, and a thief may have stolen the last bottles of water.

Also, Jack flashes back at 12 years old, to find himself on the playground in an altercation with a bully.

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S01E06 - House of the Rising Sun