Description: Brooklyn South was the 74th Precinct in Brooklyn. Francis "Frank" Donovan was the patrol sergeant who presided every day over the morning shift assignments he gave to the uniformed officers. Donovan was an informant for the hated Internal Affairs Bureau (IAB), and secretly reported to Lt. Stan Jonas, who, early in the series, transferred from being an IAB officer to the precinct captain after the officious Captain Lou Zerola transferred to precinct maintenance.
