It's a fan favorite team up this week with Locke and Hurley as the focus of our two flashbacks, with some of the biggest cameos to date! Locke is ready to put his father behind him - or is he? Hurley discovers he hates change when the lottery affects his closest friendship. On the island, the show changes forever when we discover the origins of the Hatch and the reasoning behind it's existence. The Hatch also brings a new segment to the show - The Books of LOST!