Fired CBS Rathergate producer Mary Mapes is planning a tell-all book that could blow the lid off the scandal that ended Dan Rather's tenure as "CBS Evening News" anchorman and destroyed the credibility of the once-golden "Tiffany" network. Mapes, who obtained documents on President Bush's National Guard record that turned out to be forged, "is preparing to shop a book proposal offering an inside account of what happened at CBS News during the memo scandal," reports the New York Observer. "The book will constitute Ms. Mapes’ defense against charges of journalistic misconduct," the paper says. Mapes' literary agent explained that...