Danny and Baez investigate the murder of a man who was living a double life with two separate families, and Anthony tries to resist when Erin asks him to help investigate his old partner, whom she suspects of stealing drug money. Also, Frank deliberates between two candidates for the chief of transit position.

Danny considers taking a new job that would ease his financial struggles after investigating the death of a wealthy man. Also, Nicky tries to avoid involving her family when she is sexually harassed by her boss at her new internship, and Garrett advises Frank to regain the public’s trust after a rookie cop is caught on video questioning a pedestrian’s immigration status.

When a student is shot by a rival gang member in his high school courtyard, Danny and Baez try to get a grasp on the situation to prevent a reoccurrence, but the principal recklessly takes matters into his own hands. Also, Erin tries to help a friend who is mixed up in an illegal gambling ring; and Gov. Mendez tries to frame Frank after one of his top legislative aides is shot by an NYPD officer

When Henry is the key witness on Danny and Baez’s case, his meddling pushes Danny’s buttons until he leads them to valuable information. Also, Nicky shocks her family by siding with her activist friend, Chrissie, who defaced the NYPD flag at One Police Plaza, and Jamie and Eddie learn a parole officer is taking advantage of his power over parolees.

After Anthony is shot while interviewing a witness for an upcoming murder trial, Erin enlists Anthony’s archenemy, Danny, to find out who was responsible. Jamie and Eddie get in the middle of a standoff between a police lieutenant and a developmentally disabled man posing as an officer and Nicky prepares to take the police exam.

When a journalist disappears while working on an exposé about an innocent man serving time for murder, Danny and Baez hope that reexamining the original case will help find her. Also, Frank reluctantly speaks out against an initiative led by Erin’s office to consider drug abuse as a disease first, and a crime second.

Jamie and Eddie ask Erin to drop old charges against a man who bravely rescued a woman from a local hostage situation; Danny and Baez work a case involving car thieves and discover the leader is a mobster they’ve dealt with before.

Danny and Baez join a narcotics task force to track a drug supplier; Baez comes into contact with drugs and gets an accidental overdose; Jamie and Eddie work to protect a rehabilitated sex offender; Frank forms an unlikely alliance with Mayor Dutton.

Eddie’s judgment is clouded by her past when she arrests a loathed acquaintance from college on questionable charges. Also, Frank is hesitant to mar the spotless record of a member of the force, a decorated U.S. military veteran, who tested positive for marijuana.

A case turns personal for Danny when he works to protect a nurse, Faith Madson, from her violent ex-boyfriend. Also, Shelly Wayne, an acquaintance of Frank’s, comes to him with a theory regarding the death of an inmate, and Jamie and Eddie help deliver a baby.

A famous basketball player is found dead of an apparent drug overdose. Danny investigates and looks into the victim’s possible ties to a local drug gang. Meanwhile, Erin revisits the case of a man she may have wrongfully convicted years ago; and Frank is approached by Archbishop Kearns regarding an eviction matter that Jamie and Eddie are working on.

Danny and Baez investigate the murder of a single mother whose ex-husband has a history of violence. Also, Frank deals with the fallout when Mayor Dutton eliminates solitary confinement in prisons, and Jamie’s efforts to save a young woman who overdosed on drugs has unexpected consequences.

Danny and Baez work the case of a detective who was gunned down prior to testifying against a career criminal. Meanwhile, Frank personally investigates when Garrett is attacked by a S.W.A.T. team outside his home; and Erin brings in a confidential informant against Anthony’s wishes.

Erin’s trial against a notorious human trafficker is jeopardized when the presiding judge is mysteriously found dead. Danny and Baez are put on the case to investigate foul play. Meanwhile, Mayor Dutton opposes Frank’s public safety initiative, but City Council Speaker Regina Thomas devises a plan to help Frank bypass the mayor’s veto.

Frank receives an order from the mayor to attend a parade honoring a man who served time for conspiring in an attack against the police. Meanwhile, Danny investigates the return of a teen who suspiciously disappeared 13 years ago; and Jamie and Eddie help a young woman they believe is being exploited by a congressman.

Danny considers retiring until Erin asks for his help with a case involving her ex-husband; Jamie and Eddie pose as a couple; Frank clashes with the new mayor.

Jamie and Eddie suspect foul play when they respond to a distress call from a woman having an allergic reaction to her lifesaving medication, and learn that her husband is an EMT assigned to take her call, but didn’t respond. Also, Erin learns that a man she convicted years earlier might be innocent of the crime, and Frank handles a PR crisis in his department when an exposé on Garrett Moore is published.

When Linda’s brother, Jimmy (Kevin Dillon), gets into trouble with the mob, he begs Danny to help him stay safe until it blows over. Also, Frank faces a public relations nightmare when the lawyer of a wrongfully arrested man demands that NYPD records be made public.

While investigating the murder of a man who killed a mother and son years earlier while driving drunk, Danny and Baez are torn between doing their job and finding justice after discovering the connection between the suspect and the victim.

While investigating the murder of a gang leader, Danny and Baez learn the accused shooter is an ex-con who is romantically linked to his parole officer, who might be assisting in a cover up. Also, concerned the murder might spark further violence, Frank steps in to mediate but must deal with Mario Hunt, the rival gang leader who killed a police chief two years ago.

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.

When Danny accepts a side job as a bodyguard for a recently released ex-con who took the fall for someone else, he uses the opportunity to go after the real criminal. Also, Gormley’s wife, Sheila, asks Frank to give Gormley a bigger command position, and Jamie and Eddie witness a lovers’ quarrel between two cops that leads them to reflect on their own complicated relationship.

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.

When the son of Frank’s most outspoken critic in the African-American community, Reverend Darnell Potter (Ato Essandoh), is killed, Potter must put aside his contentious relationship with the Reagan family in order to get justice for his.

Frank is left with minimal information to find a missing boy when a conflicted priest who could help won’t break the seal of confession. Also, Danny and Baez investigate the death of a prominent New York City socialite with a secret life, and Jamie and Eddie attend a wedding together.

After Emily Harrison 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,

Tries to force Frank to publicly support the Attorney General’s investigation of the use of excessive force by police. Eddie and Jamie get the call for an attempted suicide.

A NYPD whistle-blower claims there’s been abuse of power within the organization, so Frank must investigate whether this is true. Meanwhile, Danny and Baez are suspicious of a car accident involving a pedestrian and think it may have been intentional.

Erin and Anthony try to prevent the deportation of a prominent community activist who isn’t a citizen. Frank must decide if the NYPD will participate in the U.S. Marshals’ high-profile raid of a local gang.

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

A woman who was held hostage resists pressing charges, but Danny and Baez want justice for her. Meanwhile, a high-profile NYPD fund-raiser uses a phony police vehicle to avoid traffic; and Jamie has the opportunity to be a technical adviser on a TV show.

Danny and Baez investigate the death of an elderly woman who was shot in her home by a stray bullet. Also, Frank faces ridicule from his department when he disciplines a disrespectful cop, and Erin steps in to help her detective, Anthony, find a legal solution to a case that’s personal to him,

Evidence against Danny surfaces when the attorney general’s office reviews his shooting of a serial killer. Jamie and Eddie deal with a high-profile drunken driver. A slain cop’s widow asks Frank for a favor.

Frank, the Mayor, Erin and the DA’s office contend with public outrage after a grand jury doesn’t indict an NYPD officer for the controversial shooting of a teenager that was caught on video.

When a key eyewitness in a murder trial flees out of fear of retaliation, Erin and Anthony spearhead their own two-person manhunt to find him and convince him to testify. Also, Garrett tries to convince Frank to attend the Police Union party, and Danny and Baez take a closer look at a suspicious convenience store robbery.