Plot summary
Survivor couple Paulo and Nikki Fernandez kill a TV producer and steal his diamonds, but lose them in the crash. Paulo recovers them and hides them in the Pearl. He happens upon Ben and Juliet, and they discuss a plan to turn Jack by kidnapping Kate and Sawyer with him, and Paulo takes a radio they leave behind. In the present, Nikki stumbles onto the beach before dying and Paulo is found dead nearby. When the survivors find the radio, Sun suspects the Others killed them after her attempted kidnapping, forcing Charlie to admit that it was staged by him and Sawyer.
After finding the diamonds, Sawyer tries to give them to Sun as penance, but she rebuffs him. A flashback reveals that Nikki discovered Paulo had the diamonds and set a temporarily paralyzing spider on him, only to also be bitten. She buried the diamonds and ran to the beach, and in the present, she opens her eyes just before the two are buried alive.
Credits
Adapted from Wikipedia contributors, Lost season 3. HTML formatting and reference markers removed.