LOST - "The Variable" - On the 100th episode milestone for the series, the time of reckoning has begun when Daniel Faraday comes clean regarding what he knows about the island, on "Lost," WEDNESDAY, APRIL 29 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/MARIO PEREZ) SONYA WALGER, FIONNULA FLANNAGAN