NEW YORK, April 3 (UPI) -- Coup! and Good Sam actress Skye P. Marshall swears she hasn't told anybody how Season 1 of Matlock will wrap up because she wants viewers to enjoy the suspense and the resolution of the CBS drama's big central mystery. Airing Thursday nights, the show has already been renewed for a second season. Advertisement Matlock follows wealthy, married, retired attorney Madeline Kingston (Kathy Bates) as she poses as Matty Matlock, a folksy divorcee, who is actually trying to