Bestselling author and "CBS News" producer Mary Jane Clark writes thrillers set in the fascinating world of television network news. With an insider's eye, her unforgettable books have an authenticity that keeps readers coming back for more. St. Martin's Griffin knows readers can't wait for a new Mary Jane Clark novel to come out. That's why we're giving them a special treat: Two page-turning thrillers in one volume In "Do You Promise Not to Tell?,"...