Frank contends with a potentially dirty cop within his ranks; Eddie and Badillo track down the culprits behind the theft of valuable, rare works from a celebrated bookstore; Erin snoops into the background of a new woman in Anthony's life.

Frank is at odds with his friend Archbishop Kearns when he says the NYPD arrested the wrong man for a murder; Eddie tries to get justice for a sexual assault survivor; Jamie and his nephew, Joe Hill, butt heads over fair police practices.

Danny pursues a con artist pretending to be the legendary singer Jimmy Buffett; Frank investigates an impressive police captain who is using her badge to get free wares from local stores.

An illegal drug shipment arriving in New York City must be found before the narcotics flood the streets; Jamie helps a neighbor handle a gambling debt; Frank receives pushback from Mayor Chase over his handling of a brawl.

A cyber-attack on the NYPD forces Danny and Baez to release an evasive suspect; Baez questions her place within the NYPD; Eddie is torn over a workplace dilemma; Jamie wrestles with a family secret.

Danny partners with Anthony to solve a double homicide when Anthony's shady cousin proves to have gang ties to the crime; the boundary between Eddie and Jamie's work and personal relationship becomes strained.

Danny and Baez's attempts to find who assaulted a shop owner are hindered by the community's refusal to cooperate; Erin's suspicions about her boss rise; Gormley, Garrett and Baker are threatened by a new staff member.

Frank causes family tension when he assigns Jamie to guard Danny after a hit is put on him; Frank tries to stop his grandson from seeking revenge after he's attacked; Eddie gets a hostile new partner.

Jamie and Eddie experience marital tension when Eddie allows her newly released ex-convict father to live with them; Danny and Baez go out of their way to help a desperate man find his missing sister.