The Attorney General's Office gets new evidence against Danny for shooting Thomas Wilder in self-defense, while the wife of a slain police officer asks Frank to talk her son out of joining the force.
An elderly woman is shot in her home while minding her own business, the commissioner has to discipline a disrespectful cop for smoking a cigarette while on the beat.
A woman who is brutally raped by a rich friend is reluctant to press charges. A prominent donor to the NYPD asks Frank for a favor he's reluctant to give. Jamie works for a television production about police.
Intent on bringing justice to Lieutenant Gormley after he is beaten by a mob outside his home, Danny and Frank enlist the aid of Detective Anthony Abetemarco, who has a personal connection to the neighborhood where the attack occurred. Also, Eddie and Jamie witness a dishonest arrest, and Danny searches for a witness to testify against a dangerous gang leader.
Erin and Anthony try to prevent the deportation of a prominent community activist, Coryna Garza (Judy Reyes), who isn't a citizen, and Frank must decide if the NYPD will participate in the U.S. Marshals' high-profile raid of a local gang.
As Frank contends with a whistleblower within the NYPD who claims to have evidence of abuse of power in the organization, Danny and Baez investigate the case of a woman who was struck by a car under suspicious circumstances.
When a key witness in Danny's case is killed just before testifying, Erin angers Danny by enlisting Anthony (Steve Schrippa) to help him find the killer. Also, Robert Lewis (Michael Imperioli) tries to force Frank to publicly support the Attorney General's investigation of the use of excessive force by police, and Eddie and Jamie get the call for an attempted suicide.
After Emily Harrison (Danielle Savre) tells Danny and Baez she's concerned her abusive ex-boyfriend will repeat his behavior with his new girlfriend, Emily becomes the prime suspect when he's murdered. Also, Eddie gets jealous when Jamie lets a young woman crash at his apartment, and Frank must decide how to discipline a sergeant after he fails to intercede during an armed robbery while off duty.
Frank has very little information when a conflicted priest who could help find a missing boy refuses to break the seal of confession. In the meantime, Danny and Baez investigate the death of a New York socialite.
When Eddie and Jamie become overly involved in a complicated adoption case between the birth and adoptive parents, they ask Erin to help them settle the dispute without going to court. Also, Frank looks into reports of NYPD cadets cheating on their psychological exams, and Danny learns that Jack plans to enlist in the Marines after graduation.
Danny Regan is moonlighting as a private security for an ex convict who wants to see his son. Jamie and Eddie have to break up an arguement on the street between two partners.
When diplomatic immunity complicates a child abuse case for Danny and Baez, Frank intervenes, despite not having jurisdiction on the case. Also, a robbery occurs while Eddie and Jamie are on a double date with Eddie's boyfriend and his sister, and they are forced to step in.
Danny and Baez investigate the murder of a man who killed a mother and son years ago while driving drunk; Anthony is torn when Erin asks him to wear a wire to incriminate a friend.
Danny and Baez team up with two Russian operatives to search for a dangerous Russian man who entered the U.S. on a diplomatic visa. Also, Frank gets involved in a sensitive case involving Archbishop Kevin Kearns, and Erin and Anthony scramble to find out who tampered with evidence in one of their cases.
A Mexican drug cartel targets Danny when he intercepts a shipment of several million dollars; Jaime goes after a serial killer who preys on the elderly; Mayor Poole confides in Frank that he plans to retire.
