For years, the police commissioner and the mayor have duked it out for publicity, credit, and power. Some have translated their stardom into success after leaving office, while others have been hung out to dry. "NYPD Confidential"  reveals the battles for power that have led to the city's most infamous corruption cases. Filled with amazing details of backroom deals and larger-than-life power brokers, Leonard Levitt lays bare the backstabbing, power grabs, and chaotic internal investigations that make city givernment look like a modern-day Tammany Hall.