Danny consults a psychic to solve the murder of a young boy; Frank is at odds with the mayor over how best to protect the city from an uptick in crime following a high-profile shooting; Erin investigates a decades-old case.

Tension escalates between Frank and Mayor Chase after Frank makes a public arrest that goes viral. Danny and Baez investigate a gang attack that takes an unexpected turn. Jamie worries when Eddie lies to him about where she's going in the evenings.

Frank must decide between remaining police commissioner and pursuing a new professional chapter when his old friend presents him with an exciting job offer. Danny and Baez investigate the murder of a restaurant delivery man.

Jamie faces backlash from fellow officers when he partners with Erin and Anthony to investigate an underground bar the NYPD and FDNY use to hide their criminal indiscretions; Eddie's partner considers leaving the force.

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.

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.

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.

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.

Frank enlists the help of an old friend, Sloane Thompson, to investigate a cyber-attack on the NYPD that forces Danny and Baez to release an evasive suspect. Also, Baez questions her place within the NYPD; Eddie is torn over a workplace dilemma; and Jamie wrestles with a family secret.

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.

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.

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.

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.

Erin's nephew, police officer Joe Hill, becomes aware of witness tampering in a trial; Baez forces Danny to help her find the killer of her favorite TV personality; Eddie questions her decision to become a police sergeant.

Frank contends with public outcry to defund the NYPD School Safety Division, after a physical altercation between a school officer and a student goes viral; Danny and Baez help a father track down his missing ex-wife and daughter.

Frank, Baker, Garrett and Gormley experience feelings of guilt when Detective Angela Reddick (Ilfenish Hadera), an officer they briefly worked with at 1PP, is shot after Frank reassigned her for not meshing with their team. Also, Eddie, Danny and Baez investigate a man’s murder after Eddie and her partner respond to an altercation between the victim and a neighbor, and Anthony finds himself at a crossroads when he’s offered a promotion that strains his relationship with Erin.

Frank is blindsided when Mayor Chase bypasses him with a request for Jamie to head his security detail; Danny and Baez investigate the murder of a wealthy college student; Anthony fears money woes are leading his sibling down the wrong path.

A local celebrity asks Frank to make an exception to the NYPD age limit; an encounter with an old rival leads Erin to look into an alleged wrongful conviction; Jamie is torn over whether to report a sergeant; Danny and Baez look for an abducted kid.

Erin is stalked by a man who was recently released from prison; Jamie works to save his badge when he is caught driving under the influence after he is unknowingly given drugs at a party; Frank navigates multiple family issues.

Jamie and Joe search for an undocumented teenage girl who has been sex-trafficked; a woman in witness protection is murdered; Frank calls out the district attorney's office for instituting a new rule that classifies armed robbery as a misdemeanor.

Eddie and Jamie deal with a domestic violence case associated with an investigation lead by Danny and Baez; Frank and his friend go on a mission to avail themselves to an unfiltered look at the city; Erin is presented with a surprising offer.

Frank announces he will not endorse Erin's run for district attorney; Danny and Baez investigate a bloody crime scene at a hotel; Jamie begins a new job as a field intelligence sergeant that requires him to keep secrets from his family.

Danny and Baez investigate after a vicious attack leaves their mutual friend, Maggie Gibson, hospitalized; Frank and the team debate the appropriate memorial protocol for a former police commissioner with a questionable professional legacy.

Danny and Baez investigate a series of violent robberies targeting luxury timepieces; Erin is conflicted about criminally charging a potentially innocent man; Frank is forced to reopen a case in which the officer involved was acquitted.

Frank launches an investigation after the Reagan family is harassed; Danny and Baez form an unlikely partnership with an informant in order to prevent a murder; Eddie lands in hot water after she defies a direct order.

Danny and Jamie clash over a gang-related shooting; Erin and Anthony search for answers when a lawyer in their office jeopardizes a case involving Erin's nephew; Frank grows concerned when he's not invited to speak at a policing forum.

Erin and Anthony clash when Anthony's daughter is the sole eyewitness to a fatal shooting; Frank wants to punish an off-duty cop for his inaction during an armed robbery; Danny and Baez investigate a violent mugging.

Danny crosses paths with a criminal from a previous case when he investigates a gang attack with a shocking motive; Frank and Mayor Chase butt heads over an off-duty cop who goes too far making a political statement.

Frank and his grandson, Joe Hill, contend with a grievous insult to the memory of Joe's father; Erin and Henry work together to bust a scammer targeting the elderly; Eddie's captain takes suspicious interest in her efforts to locate a stolen puppy.

Jamie and his new intel team officer infiltrate a high-tech car smuggling ring; Frank faces off against the city's transit chief over a program that is causing officer injuries on the job; Eddie asks Danny to help her bust a cop impersonator.

Danny and Baez’s investigation into the death of a chess hustler is complicated by interference from the victim’s son; Jamie tries to make amends with a man he regrets putting away as a young officer.

Danny reunites with Mickey Patrick, his childhood friend and a former criminal, who comes to him for help finding his missing fiancee; Anthony surprises Erin with one last stakeout before her run for district attorney.

Danny and Baez race against the clock to catch a serial killer targeting young women; Erin and Eddie clash when Eddie intervenes in a murder case and Erin's personal life; Frank must decide how to discipline his grandson.

Eddie's former partner returns and brings an accusation of excessive force against an officer; Danny and Baez clash with a troubled foster child at the center of their latest investigation; Erin must make a tough decision about her campaign.

Danny partners with Texas Ranger Waylon Gates to deliver an infamous drug cartel boss to arraignment, but the mission becomes complicated when the criminal threatens to harm the Reagans; Erin takes on a highly contentious assault case.

Jamie learns that Eddie’s close friend Tracey may be using the restaurant she owns as a drug front; Erin is accused of causing the suicide of a former colleague; Danny and Baez are faced with various descriptions of the same suspect.

Frank clashes with the team when one of the members becomes the focus of a departmental investigation; Jamie and Danny team up to investigate a series of carjackings involving one of Danny's criminal informants.

Danny and Baez investigate a case of grand larceny tied to feuding crime families; Frank clashes with Mayor Chase when an influx of immigrants arrive in the city; Erin questions whether her district attorney campaign is compromising her day job.

Jamie partners with the FDNY to find the arsonist responsible for a massive fire at an NYPD evidence storage facility; Eddie asks Frank to put her on modified duty following her divisive arrest of an anti-cop protestor at a rally.

Frank worries his longtime friend is hiding his true reason for returning to the city; Baez and her daughter are targeted by a criminal Baez once put away; Anthony is sucked into the inner workings of an underground crime ring.

Danny and Baez team up with Danny's old partner to find a copycat killer emulating a criminal's murders from a previous case; Frank and Mayor Chase battle over how best to handle the city's rising homeless population.