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When Corruption Was King: How I Helped the Mob Rule Chicago, then Brought the Outfit Down is a memoir written by Robert Cooley, a lawyer who worked for Mafia criminals in Chicago, U.S.A., but eventually turned in his former clients. The book is co-written by journalist Hillel Levin and was published by Perseus Publishing in 2004. It details Cooley's friendships with Pat Marcy, Harry Aleman and Tony Spilotro, as well as telling the story of the nine trials in which Cooley helped the U.S. Organized Crime Strike Force convict several key Mafia figures.