Organized crime, by its nature, is a secretive activity, with the threat of violence often reserved for those who might reveal damning details of its inner workings. Better to keep quiet to prevent the whole enterprise from collapsing into turf wars, bad publicity, insolvency, indictments and prison. And so, Mob mysteries proliferate. Many of them are about the identities of who ordered and who perpetrated Mob hits. Even one of the most prolific of Mob songbirds, hitman Abe Reles of Murder Inc., was ill equipped to reveal to authorities those responsible for hundreds of New York area murders in the 1930s. Here ...