An undercover operation is underway to trace a drug pipeline. Two detectives get shot, killing one. Danny investigates along with the entire police force, out to avenge the killing. Nicky and Henry dance and sing in a show.

The former mayor gingerly approaches Frank after Jamie arrested his spoiled-rotten brat daughter, by the book, for drug possession and gross disrespect, which continues even in court. While Henry attends the funeral of his Hassidic friend, the New York grand rabbi, his junior son and designated successor is fatally stabbed just outdoors. Thus the firstborn, traditional successor becomes grand rabbi and prime suspect, or his bodyguard. Investigating, Danny and ex-Hassidic fellow detective Wolf Landsman find further possible motives in the rabbinical family's secret love life and consider further strong-armed acolytes opportunities.

Danny and Baez investigate a homicide in which Baez's estranged brother, a former drug addict, is the lead suspect. Meanwhile, Frank learns one of his most highly decorated officers, a German Shepherd in the K9 unit, is being accused of police brutality, and Henry investigates the widow of a former NYPD pal who might have had a hand in her husband's death.