The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the underwater "Looking Glass Hatch".
Quest roles:
L. Scott Caldwell(Rose Nadler), Mira Furlan(Danielle Rousseau), M.C. Gainey(Tom Friendly), Tania Raymonde(Alex Rousseau), Sonya Walger(Penelope Hume), Blake Bashoff, Andrew Divoff, Marsha Thomason(Naomi Dorrit), Lana Parrilla, Tracy Middendorf, James Lesure