 Jack, Kate and Sawyer fight over possession of a newly discovered locked metal briefcase which might contain insights into Kate s mysterious past. More of fugitive Kate s background story is revealed, showing her participating in a bank robbery in New Mexico just to uncover something hidden in one of the safety deposit boxes. Meanwhile, Sayid asks a reluctant Shannon to translate notes he took from the French woman. A rising tide threatens to engulf the fuselage and the entire beach encampment, and Rose and a grieving Charlie tentatively bond over Claire s baffling disappearance.