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During the next year in prison, Castagna did what he could to make amends, by giving the police a full account of his life in the Mafia. As a result, 19 of his former friends were jailed. Last week, gripping the bars of their cells with white-knuckled hands, they stared in cold hatred at their betrayer as he was led off to tell more of his story in court. "I'm innocent!" screamed one. But Serafino Castagna, on trial for murder, only shrugged. "We were all innocent," he said, "when we sucked our mother's milk. Now we have sucked the blood of the Mafia, and we are all guilty."