Robert Lewis obtains new evidence against Danny in the shooting case of Thomas Wilder; Jamie and Eddie respond to a drunken driving accident involving a public figure; a slain police officer's wife asks Frank to keep her son out of the police force.
A stray bullet strikes an elderly woman in her home; Frank faces ridicule after he disciplines a disrespectful cop; Erin tries to help Anthony with a case that's personal to him.
A traumatized young woman who was held hostage is reluctant to press charges; a prominent NYPD fundraiser becomes a PR nightmare for Frank; Jamie is offered a job on a TV show.
Danny and Frank enlist the help of Detective Anthony Abetemarco to get justice for Lt. Gormley after a mob attacks him outside his home; Eddie and Jamie witness a dishonest arrest; Danny looks for a witness to testify against a gang leader.
Erin and Anthony try to keep a prominent community activist, who isn't a citizen, from being deported; Frank must determine if the NYPD should participate in the U.S. Marshals' high-profile raid of a local gang.
Frank deals with a whistleblower, who claims to have evidence of abuse throughout the NYPD; Danny and Baez investigate a woman who was hit by a car.
Danny has to work with Anthony to find the killer of a witness; Robert Lewis tries to force Frank to publicly support the Attorney General's investigation into the use of excessive force by police.
A woman becomes the prime suspect in the murder of her ex-boyfriend; Eddie is jealous when Jamie allows a young woman to crash at his apartment; an off-duty sergeant fails to intercede during a robbery.
Frank is left with little information to find a missing boy when a conflicted priest refuses to break the seal of confession; Danny and Baez look into the death of a socialite with a secret life; Jamie and Eddie attend a wedding.
The son of an outspoken critic in the African-American community is murdered; a convicted felon's cause of death doesn't match the injuries he received when the prisoner transport van carrying him crashed.
Eddie and Jamie get involved in an adoption case between birth and adoptive parents and ask Erin to help settle the dispute; Frank investigates reports about NYPD cadets cheating on psychological exams; Jack plans to enlist in the Marines.
Danny takes a side job as a bodyguard for a released ex-con who took the fall for someone else; Gormley's wife asks Frank to give Gormley a bigger command position; Jamie and Eddie reflect on their relationship.
Frank intervenes when diplomatic immunity complicates a child abuse case; a robbery takes place while Eddie and Jamie are on a double date, and they are forced to take action.
Danny and Baez investigate the murder of a gang leader and learn the accused shooter is an ex-con who is romantically linked to his parole officer, who might be assisting in a cover up.
Danny and Baez investigate the murder of a man who killed a mother and son years earlier while he was driving drunk; Anthony is conflicted when Erin asks him to wear a wire to incriminate a friend.
Linda's brother, Jimmy, gets into trouble with the mob and asks Danny to help him stay safe; the lawyer of a wrongfully arrested man demands that NYPD officers' disciplinary records be made public; Nicky goes on a ride-along with Jamie.
Jamie and Eddie suspect foul play when they respond to a distress call from a woman having an allergic reaction to her lifesaving medication; Erin learns that a man she convicted of a crime years earlier might be innocent; Frank handles a PR crisis.
An ex-NYPD officer goes missing the day after she reveals to Danny her plans to make amends to the woman she and her partner wrongfully convicted years ago; Frank faces a dilemma when one of his peers refuses to retire.
Erin faces off against her ex-husband in court when he represents the person she is attempting to convict of murder; a mother accuses the NYPD of being negligent in solving her son's murder; Jamie rides with a new partner.
A witness in a former case of Erin's asks her to help shut down a drug operation; while investigating a teen's suicide, Danny and Baez find clues that suggest the death was a homicide; Frank looks into potential misconduct in the mayor's office.
Danny and Baez work with two Russian operatives to search for a dangerous Russian who entered the U.S. on a diplomatic visa; Frank gets involved in a sensitive case involving Archbishop Kevin Kearns.
A Mexican drug cartel targets Danny when he intercepts a shipment of several million dollars; Jamie goes after a serial killer who preys on the elderly; Mayor Poole confides in Frank that he plans to retire.