Vanessa wants to go to a hospital to control her disease, but Tyus wants her to stay in his place, so that he could study the Martin's Syndrome up close and find a cure for her. Meg and Derek make love, while Meg has a feeling that "Ben" is a stranger. Casey wants to help Sara and arranges a press conference so she could make a statement. Derek tells Ben that he was never intimate with Maria. Sara states that she was never intimate with Congressman Blythe, but the press doesn't believe her. (thetvdb.com)