Lost: The Glass Ballerina

Kate and Sawyer are forced to do manual labor. In flashbacks, we learn more about about how Sun betrayed Jin in the past. Sun betrays Jin again when he wants to return to the island, but she chooses to help Sayid. Sayid lies to Sun and Jin and puts their lives in danger while setting a trap for "The Others." He and Jin hide and wait with guns on the island while Sun stays in the boat. However, the plan backfires when "The Others" capture the boat with Sun on it. Sun is forced to shoot a woman who finds her, and then jumps off the boat and swims back to Jin and Sayid.