LOST - "D.O.C. - After discovering that all of "The Others'" pregnant women died before giving birth on the island, an extremely reticent Sun allows Juliet to examine her -- and uncovers the identity of the unborn child's father. Meanwhile, Desmond allows an unlikely nemesis to help save the life of a new, mysterious island inhabitant, on "Lost," WEDNESDAY, APRIL 25 (10:00-11:00 p.m., ET), on the ABC Television Network. (ABC/MARIO PEREZ) ELIZABETH MITCHELL, YUNJIN KIM