NYPD 's secret history from more than 30 years unveiled in book about the force . Looking at men who led the police , book describes kickbacks and brutality . One chief of police led the mob to the whereabouts of his star detective . Another failed to investigate KKK infiltration in the ranks of his department .
NYPD 's secret history from first 50 years unveiled in book about the force . Looking at men who led the police , book describes kickbacks and brutality . One chief of police led the mob to the whereabouts of his star detective . Another failed to investigate KKK infiltration in the ranks of his department .