LOST - "The Glass Ballerina" - Sayid's plan to locate Jack places Sun and Jin's lives in grave danger. Meanwhile, Kate and Sawyer are forced to work in harsh conditions by their captors, and Henry makes a very tempting offer to Jack that may prove difficult to refuse, on "Lost," WEDNESDAY, OCTOBER 18 (9:00-10:00 p.m., ET), on the ABC Television Network. (ABC/MARIO PEREZ) EVANGELINE LILLY, JOSH HOLLOWAY, M.C. GAINEY