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 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 avvia un'indagine dopo che la famiglia Reagan viene molestata; Danny e Baez formano un'improbabile partnership con un informatore per prevenire un omicidio; Eddie finisce nei guai dopo aver sfidato un ordine diretto.
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 Joe 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 e il suo agente della squadra di intelligence si infiltrano in un giro di contrabbando di auto ad alta tecnologia; Frank si scontra con il capo dei trasporti della città per un programma che causa lesioni agli agenti sul lavoro.
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 ritrova l'amico d'infanzia ed ex criminale Mickey Patrick, che gli chiede aiuto per ritrovare la fidanzata scomparsa; Anthony sorprende Erin con un ultimo appostamento prima della sua candidatura a procuratore distrettuale.
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.
Il ritorno di Rachel Witten, ex partner di Eddie diventata assistente sociale, mette alla prova la lealtà di quest'ultimo e mette in conflitto Frank quando Rachel muove un'accusa di eccesso di violenza contro un agente.
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 scopre che Tracey, una cara amica di Eddie, potrebbe usare il ristorante di cui è proprietaria come copertura per la droga. Erin è accusata di aver causato il suicidio di un ex collega.
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.
Frank clashes with Mayor Chase when an influx of immigrants arrives in the city. Danny and Baez investigate a case of grand larceny tied to feuding crime families.
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.
