Redston, who admits to several felonious activities and a handful of Justifiable homicides (and has served time), begins as if he were about to blow the lid off the Mafia. He doesn't. His personal revelations are invariably the best parts of his story, but he appears in less than half the chapters. ""I believe I..know more about this organization...than any man not a top dog in it,"" he tells us, and it may be true. But his book is padded with almost identical information we've read in two or three recent Mafia exposes. By sheer number of words devoted to him (and by beauty of rendering), Mickey Cohen emerges as main villain--and he's not even Sicilian! Perhaps this is okay though, because Redston lost a best friend to Mickey's hired hood. (Mickey's serving a tax rap now.) First-class portraits are also given of Bugsy Siegel and chippie Virginia Hill. Redston himself has gone straight, worked for Senate investigation committees and became a lecturer on Communism.