Episode 4x13, There's No Place Like Home Part 2
Jack goes to the Orchid Station and Locke says he wants to talk to him alone. He tells Jack that he's not supposed to leave the island and to stay. Jack refuses and Locke says then he has to lie about where they've been.Locke tells Jack that he's about to perform a miracle, but Jack says he doesn't believe in miracles.
Ben comes and he and Locke go down into the Orchid where Locke watches an orientation video. Keamy comes down and Ben stabs him. Locke tries to save Keamy because if his heart stops, a remote access detonator will blow up the freighter. Locke is unsuccessful at saving Keamy.
Ben tells Locke that he's going to move the island, which means that he won't be able to return to the island. He tells Locke to find Richard and his people east of the Orchid. They will fill him in and then they will follow his every word.
Locke finds Richard who says, "Welcome home."
