Plot summary
Ben's mother dies giving birth to him. Horace Goodspeed, a man Ben's father Roger met during the incident, invites him to the island to work for DHARMA, who are constantly besieged by the island natives. Ben follows a vision of his mother into the jungle and meets the unaged Richard. Twenty years later, he and Roger take a van out for his birthday, but Ben kills him, abandons the van in the jungle, and returns to find the rest of the DHARMA people gassed by the natives in a concerted operation.
In the present, Sawyer confronts Juliet, who explains that she told Jack about Ben's plan and is on the camp's side. Ben tells Locke that the Others follow a man named "Jacob" and complies with Locke's demand to meet him. He takes Locke to a cabin where he speaks to Jacob, whom Locke cannot see, though he hears him say "Help me." Ben takes Locke to the mass grave of the DHARMA purge and shoots him, leaving him to die after Locke repeats what Jacob said to him.
Credits
Adapted from Wikipedia contributors, Lost season 3. HTML formatting and reference markers removed.