"As a Los Angeles county prosecutor, Vincent Bugliosi batted a thousand in murder cases: 21 trials, 21 convictions, including the Charles Manson case in 1971. As an author, Mr. Bugliosi has written three No. 1 best sellers and won three Edgar Allan Poe awards, the top honor for crime writers. More than 30 years ago he co-wrote the best seller Helter Skelter, about the Manson case. ... [H]is latest, a polemic with the provocative title The Prosecution of George W.