Frank mobilizes the entire NYPD to find the killer of a police officer who was murdered after a diamond heist.

A teenager's party leads to 4 deaths and 1 illness when some of them snort some special powder. Danny takes a sniffer dog to the students' school lockers to solve the case. A teacher's entanglement with a boy student is revealed.

Off-duty Jamie stumbles on a fracas in Chinatown. He chases one of the men, who dies in a car collision. Internal Affairs investigates Jamie and Danny inside Chinatown, finally nailing an illegal adoption racket for Chinese babies.

The life of a Reagan is put in danger when three dangerous criminals are released from prison.

When a doorman at a New York City hot spot is murdered, Danny returns to investigate the nightclub scene he left behind years ago. Meanwhile, Frank makes a decision about an ex-partner's future.

Danny unravels a judge's complicity when he favors a sex trafficker and FBI informant against the mob. Frank gets closure for a case from his policing days of a boy who had disappeared. The boy's remains and a confession achieve that.

When the son of a Russian gangster is killed at his own engagement party, Danny delves into the world of the Russian mob and the family politics that exist. Meanwhile, Erin is thrown into a high-profile corruption case.

An undercover cop, who had infiltrated a terrorist cell, is shot. A girl, with acute anxiety and living alone, frequently complains that her house furniture has been disturbed. Danny solves the shooting and Jamie apprehends the intruder.

When a young girl is tied up, gagged and held for ransom, Danny and Jackie place her drug-addicted boyfriend at the top of their suspect list. Meanwhile, Erin and her boss, Charles Rossellini, take their flirtatious banter a step further.

When an assassination attempt is made on Frank's life, Danny goes on a hunt to track down the shooter and find out if the attack was random or by someone with a vendetta against the Commissioner.

Nicky, Erin's daughter, writes a school paper on policing, and is upset when she sees a real dead body. Danny solves that murder. Jamie apprehends an art student who sprays art work on walls and shop shutters. He is let go with a warning.

Danny chances upon a fatal shooting outside a store. His investigation reveals that the shooter is a Peruvian mob boss. The police arrest this killer but Danny's wife is kidnapped, to pressure him not to testify. His wife is then rescued.

When Linda's runway model niece and another model collapse at a fashion show, Danny and Jackie immerse themselves in the cut-throat world of fashion to find the culprit who poisoned them.

When a tourist from Iowa who is visiting the city with his wife gets mugged and shot, the press soon puts the pressure on the police to solve the case fearing for New York's reputation with tourists.

An elderly couple known to the Reagans is murdered in their house in the neighborhood, Jamie's service weapon gets stolen from his locker and Frank fights the mayor about the police budget.

Jamie shares his suspicions with his family about Joe's killing and the now infamous Blue Templar. A private investigation leads them to the police officers who are the ring leaders of this secret group. Joe's death gets a fitting closure.

A married, family man and supporter of the new Mayor, involved with a Croatian girl, is shot dead. The Mayor is averse to bad press. Frank stays on as Commissioner. Plain-clothed Jamie unknowingly helps a mob member who had over-dosed.

When Danny shoots a cop who failed to identify himself, he is put on modified assignment and must face an Internal Affairs investigation, which delves into his personal state of mind that day.

When a bank robbery turns into a hostage situation, Frank realizes that the perp is a former cop and old friend who has resorted to crime because of his daughter's desperate illness.

Erin reopens an 18-year-old rape case in which Frank was the arresting officer. Meanwhile, Danny and Jackie investigate the murder of three teenagers in a park who seemed to have been killed for no reason.

Danny tries to juggle investigating a case with trying to have a romantic weekend with Linda. Meanwhile, Jamie goes deep undercover into a crime family.

Frank deals with a political crisis after Jamie and Renzulli enter a religious center in response to a 911 call and are injured by the church's security team who prohibits them from entering.

An escort is murdered in a hotel room. Sensing a pattern, Jackie poses as a decoy escort. Frank has budget constraints but resisting unions. Henry declines a consultant's role in a private agency looking to profit from outsourcing in NYPD.

A girl falls from her apartment window and dies. Danny investigates. Henry has a heart attack and spends Thanksgiving in the hospital. Tony gets cash to square off his gambling debt, with a warning from the Commissioner.

Jamie goes undercover in a boiler room operation, selling stocks on cold calls, to get their client list with criminal links. Danny drives around a convicted mobster who reveals murdered bodies, in a deal to help his carjacking son.

A whistle blower and Erin's confidential informant is killed. Danny investigates and a personal angle to his killing is unearthed. Frank exposes an edited video which was disparaging towards the police force.

Danny and Jackie investigate a murder scene at a diner where a witness claims a uniformed officer fled the scene after shots were fired.

Danny, returning with his family in their car, bumps into a man. Shots are fired, and they miss hurting his family. Frank speaks at his partner's wake, who went on disability after rescuing more than 100 from the North Tower on 9-11.

A woman is found dead. The daughter reports a murder while her step father reports a death. Danny investigates. Frank's support is sought for the canonization of a priest of his parish. Unsure, he probes and gives meaningful feedback.

Nicky gets a reality check when her absent father shrugs her off. An illegal immigrant is robbed of his cash. His son accidentally kills the robber. Danny coaches the son in making a statement which would get him a lower sentence.

An undercover operation is underway to trace a drug pipeline. Two detectives get shot, killing one. Danny investigates along with the entire police force, out to avenge the killing. Nicky and Henry dance and sing in a show.

A tv journalist and Frank's secret girlfriend survive an acid attack. A member of the mob, in charge of the stocks' operation, gets killed. Undercover Jamie is under suspicion. Police intervene to save Jamie without blowing his cover.

In the course of a murder case trial, another murder takes place and Danny, the detective, finds himself pitted against Erin, his prosecutor-sister, in the courtroom. Frank's onyx credit card is misused after fraudulent duplication.

A reverend, the mayor and the police organize a gun buyback plan, with no questions asked. There, a gun used in a shooting at a chemist's is traded in. Danny investigates without being able to use the evidence from the buyback program.

Jamie saves a baby from an apartment fire but Renzulli gets the credit so that his cover remains intact. A fireman's 11-year-old son, a school friend of Danny's son, feels that his father did not commit suicide. Danny investigates.

Erin's witness in the murder trial of a violent mobster is killed before giving testimony. Due to a leak, the next witness is threatened, but protected by Danny and Jack. Erin is offered the Deputy Mayor's position, but she declines.

A man dies in the reception area of a hospital. The investigation leads to an illegal fight club with heavy betting. The fight was doctored by cementing the gloves of one fighter. Jamie's cover is blown, and he saves Noble from a mob hit.

The police come to know of a citywide biological threat and Frank deals with it. Danny, hunting for a petty thief, gets a tip which helps resolve one of his unsolved cases. Jamie and Danny argue about booking rights for this petty thief.

A dangerous criminal from Danny's past comes back to seek revenge and kidnaps Jackie. Meanwhile, Jamie meets his new partner. Michael Madsen and Corbin Bleu guest star.

When an injured woman recants her claim of domestic violence, Danny and Jackie look into it further only to find that the woman is involved in a secret relationship with a high powered councilman who also happens to be a friend of Frank.

Erin's ex-husband returns to town and opposes her in court. Frank spends the day with a young man who won a contest and he tells Frank that he doesn't think that the police give equal priority. He talks about how his mother was killed and how it's still unsolved. Danny is investigating the murder of two men who along with two others were charged with raping a girl, but because of a technicality they got off. Danny wonders if he should really give it his all.

Danny and Jackie set out to investigate the murder of a bride on her wedding day in a drive-by gang shooting. However, they are pulled off the case and assigned to the protection detail of a Central American president who they believe is a target for assassination.

A detective who was instrumental in the arrest of a Malaysian drug dealer is kidnapped by the drug dealer's brother who threatens to kill the detective if his brother is not released. Frank's stance is not to negotiate with terrorists so he has Danny and the detective's partner try to find him. Henry joins Jamie on a ride-along and, when he sees how Jamie works, Jamie can't help but worry that Henry doesn't approve of his methods.

When Erin's key witness, an infamous photographer, is nearly killed in a hit and run, she arranges for Danny to work protection detail to safeguard him.

Danny is called to the scene on Halloween night, when a man in a priest costume is attacked by a figure dressed as a skeleton. Detective Kate Lansing is assigned to help on the case and she recognizes the skeleton costume as the garb of Baron Samedi, a Haitian spirit of death.

Danny arrives at a college campus to find a murdered student, who was thought to be dealing drugs.

Danny is investigating the shooting of a man who's an ex-con, and there's a lot of people who wants to see him dead. The man dies in the hospital and he asks for a priest to give him the last rites. Danny learns of this and asks the priest to tell him what the man said but the priest refuses to say anything. A known criminal lawyer Frank knows gives him some information but Frank is not sure if he should believe the lawyer. And Henry is mugged and Jamie is determined to find the one who mugged him.

When two motorists driving gas-guzzling cars die at the hands of a sniper, Danny and Kate are put on the case of what the city believes is the work of a radical environmental serial killer.

Jamie must deal with the emotional consequences of his actions on the job. Susie Essman and Annabella Sciorra guest star.

Danny is pulled over by a cop who asks if he can look what he has in the back of his vehicle. Danny asks him what's going on, he says he got a tip that a vehicle like the one Danny is using, was at a drug buy. Danny thinking it's outrageous and lets him look but the cop finds some drugs and arrests Danny. When the family learns of this, Linda wants Frank to intervene and he doesn't think he should and he says that's for everyone. Henry asks Erin's ex to defend Danny and he does by making him question his trust of his partner. And when he sees her with the IAB Captain investigating him, he wonders if he can trust her.

When a man with multiple rat bites is thrown from a moving car, Danny works the case to find out why and who was trying to send a message. Mary Elizabeth Mastrantonio and Mark Moses guest star.

The former mayor gingerly approaches Frank after Jamie arrested his spoiled-rotten brat daughter, by the book, for drug possession and gross disrespect, which continues even in court. While Henry attends the funeral of his Hassidic friend, the New York grand rabbi, his junior son and designated successor is fatally stabbed just outdoors. Thus the firstborn, traditional successor becomes grand rabbi and prime suspect, or his bodyguard. Investigating, Danny and ex-Hassidic fellow detective Wolf Landsman find further possible motives in the rabbinical family's secret love life and consider further strong-armed acolytes opportunities.

When a 10-year-old boy is the victim of an incident in the projects, Danny's heated approach to the case lands him in anger management class.

Danny and Jamie are playing basketball with some other guys. A guy Danny knows gets into it with a guy Jamie knows; the guy Danhy knows smacks the guy Jamie knows. The one who was smacked has to be hospitalized and he demands that the one who smacked him be arrested and Danny reluctantly does it. He tells the guy he knows that his sister is the D.A. and maybe he can talk to her. Erin is approached by a man who asks her to re investigate his daughter's unsolved murder which is 15 years old. Erin goes to Danny and asks him to look into the man's daughter's murder. It seems the man thinks that his daughter's boyfriend who's the son of a wealthy man should be considered. Danny agrees, if she helps his friend. Danny goes to see the detective who investigated the murder and he tells Danny that he had an alibi and took a polygraph and passed. Erin informs Danny that his friend has a previous record which means he has to be indicted. Jamie offers to talk to the guy he knows. Erin and Danny see the man and tell them what they learned. He tells them that the guy's father's company has polygraph which he could have learned how to beat it. And he also tells them that his alibi witness was a friend. So Danny decides to look deeper. Frank and Garrett have a disagreement when Frank is interviewed and a very touchy question is asked.

Amid protests over the NYPD's new "stop, question and search" policy, Erin and the entire Reagan family are targeted by a protest group's photographer, who is publishing the photos to a website. When a rape victim that Erin is preparing for trial appears in some of the photos, Erin confronts the photographer. Danny and Detective Maria Baez investigate a young "Bonnie and Clyde" type couple who rob a bank and steal an off-duty police officer's gun in the process, but the intrusion of the FBI threatens their progress. Elsewhere, Frank considers getting romantically involved with an ACLU representative named Whitney, who is an acquaintance of Erin's and close to Erin's age.

When a man is shot in Times Square, Danny investigates and learns the man had no enemies or reason for someone to kill him. Another person is killed and there appears to be no connection between the two victims. He later learns that the second victim got away with murder so he thinks someone is trying to get payback. Erin takes him to the D.A. who prosecuted the second victim. The man's irate about the victim because he feels she should have been convicted. When a third person is killed, Erin figures out what the link is. Jamie finds a boy wandering the streets with blood on his clothes. He takes him back to his parents and can't help but wonder if there's anything wrong at their home. An astronaut who just retired, who's also a friend of Frank, comes to the New York. They meet and the man drinks very heavily and talks about his family, but Frank learns the things he said about his family are not true and tries to help him.

The body of a girl is found in the cemetery laid out as if she was being prepared for burial with a cross in her hands. Danny investigates and talks to her father, who says she's a very devout Catholic girl. But when they talk to her friends they discover that she's keeping secrets from her father. Frank learns that a former NYPD cop shot two cops in Miami, killing one of them after being rejected. It seems like the cop was fired from the NYPD. And Frank fears that he might be coming to New York to go after the ones who go him booted from the Force.

Danny was about to apprehend a known drug dealer but a man who accompanied him starts shooting and even the dealer is hit. Danny goes to the hospital to talk to him but Linda won't let him. Later the shooter kills someone else. And when the dealer dies, Danny is upset with Linda. Danny asks Jamie to help his son with a soap box derby that the family has won since Frank joined. And a rival family tells them, they're going to get them. And Henry reveals to Frank why they've been winning. And Erin is promoted. On her first day, one of the prosecutors, tells her she prosecuting a case and the defendant is facing his third strike. So she looked at his previous convictions and learns that one of them might be questionable and Erin looks into it and the one who prosecuted it was the person who promoted her.

When a man is found wandering the street with blood all over his clothes, Danny and Baez try to find out what happened but the man says he doesn't remember. He says he's from out of town and he's with his girlfriend and that he's planning to propose to her. They go back to his hotel room and find his girlfriend dead and blood all over the room. While the guy still maintains not to know anything, Danny has no choice but to take him in. Danny's not sure what to believe. An off duty cop who was drinking comes across a robbery and stops it. Later, Jamie shows up and smells that he's been drinking and tries to help him but the Captain sees what he's doing and orders that the cop be tested. When he comes out positive, he has to face a hearing. Frank, who admires what he did, but believes in following the rules. And Erin gets a call from her daughter's school who informs her that her daughter is planning some kind of protest and if she goes through with it, she'll face suspension.

Danny gets a call to go to a project where a gang rules with fear and intimidation. Jamie finds a girl standing on the roof holding her baby, saying she can't stand their lives being controlled by street gang Los Lordes so she jumps to death with her baby. Danny later learns that the girl was someone he met when she was younger when her parents died and he said he would help her and her sister. Danny goes to her sister who is bitter that Danny forgot about them. He learns that she is now with the leader of the gang. While Jamie and his partner are walking through the project there's some shooting and Jamie's partner is hit. Frank later learns that the D.A. is not pressing to prosecute the gang so Frank goes to the mayor for help.

As the Reagans rally together to take down the leader of the gang responsible for the murder of someone close to them, Danny looks to the gang leader's girlfriend to lead them to him.

When an armed robbery ends with the death of a police officer, Frank makes it a mission for the NYPD to bring the suspect to justice.

When a famous movie star, Russell Berke, who shadowed Danny for research on his next role, is stabbed, Danny goes to his aid, but must keep the crime on the down-low due to Russell's celebrity status. Marc Blucas guest stars.

Danny becomes the lead hostage negotiator when a prime informant in a large drug case holds Erin at gunpoint inside the courtroom.

Danny and Baez investigate the death of a teenage girl who appears to have been pushed in front of a subway car by a homeless man. Bebe Neuwirth guest stars.

When Danny and Baez suspect a little girl might be the victim of a kidnapping, the girl's mother denies it, but her story doesn't add up.

When a gangbanger dies after Jamie chases him away from the boy he is mentoring, Jamie's conduct is called into question. Meanwhile, Baez goes undercover to get information on Danny's ex-girlfriend's fiancé who is dealing drugs from his gym.

When an officer is accused of using excessive force on a suspect, Frank finds his department under scrutiny from the community and the mayor.

Following Frank's dinner with mob lawyer Angelo Gallo, Gallo is shot, and Frank narrowly escapes with his own life. Meanwhile, Danny is called for jury duty, and winds up being the sole dissenting opinion in a murder trial.

Danny and Baez investigate a homicide in which Baez's estranged brother, a former drug addict, is the lead suspect. Meanwhile, Frank learns one of his most highly decorated officers, a German Shepherd in the K9 unit, is being accused of police brutality, and Henry investigates the widow of a former NYPD pal who might have had a hand in her husband's death.

Danny and Maria investigate a local bombing, but are met with tension and resistance from the community during the investigation. Meanwhile, Frank must deal with the political fallout when a man punches an officer who was overly aggressive in his questioning.

Danny's loyalty is tested when he is assigned to the case of a childhood friend, Mickey, who is under investigation for having ties to an infamous mob family. Meanwhile, Frank gets word that crime is on the rise due to a recent judicial ruling about the legality of the "stop and frisk" policy.

When Danny learns from Nicky that there's a deadly new brand of heroin hitting the streets, he begins an all-out manhunt for the distributor. Meanwhile, Frank pulls out all the stops to assist in getting the drugs off the street.

Danny and Maria must track down an Army veteran who Danny thinks is suffering from PTSD. Meanwhile, Frank is caught off-guard during a press conference by a woman who is seeking justice for her murdered daughter.

Danny and Baez investigate the murder of Tiffany Lamp, a popular drag queen who was found murdered in a local park. Meanwhile, Erin reexamines a drug case scheduled for trial after she is abducted by the accused man's mother.

A young girl's abduction reminds Danny of an unsolved case he worked on years ago. Elsewhere, Frank angers the inspector general when he won't reveal info about a program involving intelligence officers overseas.

Jamie get a fake phone number from a sexy bicycle messenger who he later discovers is using counterfeit $50s. A woman named Jill calls Danny threatening to end her life. Frank chaperones Sean's school field trip to a museum.

Danny and Maria investigate when an expectant mother is a victim of a "knockout game," in which teenagers punch unsuspecting civilians in the head. Meanwhile, Frank wrestles with promoting an officer when he thinks it can be viewed as favoritism.

Danny and Baez investigate the death of a woman whose body was dumped after she was killed by a lethal dose of Fentanyl, following secret plastic surgery. Meanwhile, Frank privately assigns Jamie a cold case, and Erin tries out speed dating.

Danny and Maria investigate the murder of a respected college professor who was involved with a questionable scholarship program. Meanwhile, Danny discovers that his father didn't tell him that the District Attorney is investigating Danny for ethical and procedural violations.

When Erin is assigned to investigate a case in which an on-duty police officer is accused of killing a suspect already in custody, Frank urges her to stick to the facts to avoid a publicity scandal for the NYPD. Meanwhile, Jamie urges Eddie to forgive her father for his past mistakes.

An undercover cop is shot. An investigation shows that the cop had personal secrets. A junkie approaches Erin asking for help, but when Erin recognizes him as a friend of Nicky, he runs away. Nicky asks Erin and Jamie to help find him again.

Danny gets himself into trouble after being told not to pursue a suicide case of a C.I. of the D.A. Jamie and Janko get involved in an immigration case of couple wanting to get married, but the bride's father is against them.

Baez gets injured while escorting confiscated drugs, so Danny goes after the drug cartel responsible. Elsewhere, a lieutenant with a commendable record engages in controversial behavior, putting Frank in a difficult situation.

Jamie stands up for an officer who is harassed for testifying against her partner. Erin learns her lover may be her boss at the DA's office. Danny asks Erin to file murder charges against a man who shot a 15 year old girl who ended up dying 8 years later.

Danny and Baez are temporarily assigned new partners when an officer is outed and his current partner won't ride with him. Meanwhile, Jamie and Eddie work on a revenge mission to steal a collar from a pompous detective, and Frank compromises his relationship with the Archdiocese when he speaks out about equality in the police force.

Danny Reagan is accused of police brutality. Frank has to walk a fine line in the investigation and find the truth. Jamie meets a female doctor, and it makes Janko uneasy.

A woman's abusive boyfriend targets Jamie after he intercedes in a domestic dispute. Elsewhere, the press get ahold of an illegal tape capturing Henry's insensitive comments, and Frank must deal with the ensuing scandal.

Danny and Frank will join forces to put an international criminal behind bars for good.

Frank is taken by surprise during an on-air interview with Erin's boss; Danny and his new boss clash as they investigate a drive-by shooting. Meanwhile, Jamie and Jenko help out detectives with an apparent suicide.

Frank faces public backlash after an officer's body camera malfunctions during an altercation with a civilian.

Three community leaders are killed in apparent hate crimes, and Danny and Baez investigate as Frank meets with folks who want to ensure the gravity of these crimes is not ignored. Meanwhile, Linda wants to protect herself with a gun after getting mugged.

Frank pushes to find evidence against a suspected cop killer who shot one of Henry's fellow officers years ago. Meanwhile Danny and Baez investigate a string of murders involving adult film stars.

When a group of highly trained Army veterans robs a bank, Danny feels conflicted; a street artist is responsible for a bomb scare.

Jamie gets Danny involved when he finds a homeless teen who claims his aunt was killed by her boyfriend. Meanwhile, Erin is angered when McCoy replaces her as the prosecutor on a case involving a corrections officer.

When a homeowner shoots an intruder, Danny and Baez' investigation finds the intruder is a hitman. A 12-year old murder case of Erin's is reopened as an attorney tries to find justice for his mother.

Danny and Baez look into the murder of a lower income resident living in a luxury building where a percentage of units are available for lower income housing. Frank disagrees with a detective friend of Gormleys.

A mob informant returns to the city to testify in a case for Erin, and Danny and Baez are tasked with protecting him. Elsewhere, Frank and Mayor Poole get into heated negotiations regarding benefits for police officers.

Baez is held hostage in an interrogation room by a distressed man who wants to see his daughter. Elsewhere, Garrett's son gets in trouble with the law, so Garrett turns to Frank for help, creating an ethical dilemma for the police commissioner.

Erin's unnerved when someone breaks into her apartment, and then she discovers her coworker was attacked. Elsewhere, Jamie and Eddie find a pipe bomb in a halfway house for addicts; and Frank investigates a charity that's supposedly helping the NYPD.

Eddie goes undercover for the first time when she tries to take down a kidnapping ring, which is luring in young women with websites for phony youth hostels. Elsewhere, Frank assists a woman who wants to confront the inmate who murdered her family.

An investigative journalist refuses to give up a source who admitted to committing murder.

A celebrity chef from reality TV is murdered and a suspect readily confesses to the crime, but Danny and Baez think there is more to the case. Jamie and Jenko investigate a bizarre assault and elsewhere a senator uses his friendship with Frank to ask for a favor regarding a DUI charge.

When NYPD Deputy Chief Donald Kent and his wife are gunned down in an apparent gang hit, Frank orders the whole department to scour the city for his friend's killer.

In the conclusion of the two-part Season 5 finale, one of the Reagans is shot by a gang member, and Danny pursues a suspect while trying to keep his emotions in check. To add to the complications, Danny has to find an inventive way to bring in witnesses.

Frank goes on high alert when a threat to New York City may be imminent following a terrorist attack in the Middle East.

A possible serial-killer case is assigned to Danny and Baez. Erin considers becoming a judge; a mayoral candidate claims that Frank has been secretly investigating her spouse; and Eddie confronts her dad.

When a newspaper reporter is targeted while wearing NYPD gear during a ride-along, Frank thinks the shooter is targeting cops.

One of Erin's informants leaves witness protection to give his former boss an alibi; Frank and the New York City fire department commissioner get into a war.

Danny joins the search for two escaped convicts after learning that one is someone he helped wrongfully imprison.

Camera footage appears to show Jamie committing police brutality at a demonstration; a civil rights attorney claims a rape case includes drummed up charges.

The only remaining Mustang driven by Steve McQueen in "Bullitt" is stolen; an order from the acting district attorney puts Frank and Erin at odds.

Linda is concerned when an elusive serial killer starts threatening her, Danny and their kids; during a hostage situation, Jamie challenges a superior officer.

DA Investigator Anthony Abetemarco helps Erin when she is forced to take a case from a colleague, ADA Kelly Blake; Eddie and Jamie pose as an elderly couple in order to catch a gang.

Danny is interrogated by the District Attorney's investigator when his ex-partner is accused of planting evidence in order to wrap up a homicide case. Also, when radical anti-government activists threaten to publicly burn an American flag, Frank grapples with the limits of free speech.

Frank worries that a tell-all book about his old cop days will affect his career as PC. Meanwhile, Erin and DA Investigator Abetemarco investigate the murder of another DA Investigator in a bar where they wind up in a conspiracy.

A mobster is found shot in his car and his low-level errand boy is tied up in the trunk; an NYPD officer asks for a new shield number -- the same number as Frank's deceased son Joe.

Frank deals with the aftermath of a retired cop who shot his mugger. A trainer flouts authority, mingling with Janko. A man Baez saw kill her friend 25 yrs. ago has returned; she and Danny figure out how to bring him to justice.

Four gorgeous women used in a local brothel admit to murdering their evil boss. Danny and Baez must figure out the real killer. Frank and his priest argue over mercy in the Catholic Church while Nicky Reagan-Boyle gets in drug trouble with her friends but no one takes the blame.

Erin is overwhelmed with guilt after a man she set free is accused of killing a cop. Also, Frank and Mayor Poole continue their game of political chicken over Frank's reappointment as commissioner, and Danny and Maria investigate a case of a cop who has gone AWOL.

The newest Speaker of NY City Council, (Whoopi Goldberg), a chronic malcontent, wants to dismantle the NYPD's "Broken Windows Policy," a position Frank vehemently opposes. Erin worries when the wife of her good friend and mentor, Judge Wilson, dies as a result of DUI, and, his sentencing suddenly runs off the rails. Linda's co-worker at the hospital has a problem with her ex-husband. Linda asks Baez and Danny to talk to the parties involved and it turns into a big ordeal. Judge Wilson takes on attorneys who dare to argue with the bench (i.e. our jobs); it may be time for a Judicial Ethics Commission Complaint. Does Erin have the balls to file one?

Jamie and Danny disagree about how to handle a reckless NYPD rookie, Marcus, who is the son of Dannys friend. Also, when Erins investigator, Anthony, gets roped into a bad investment by his cousin, she offers to look into it.

Frank and Danny Try to help a rehabilitated ex-con when he becomes involved in the murder of an enemy; a former prosecutor withholds the location of an alleged killer from Erin as she prepares for the trial.

An officer involved in the controversial shooting of an unarmed person 14 years prior, is up for a promotion which brings up mixed feelings from various NYPD officers, in addition to forcing Frank Reagan to make a difficult decision.

When serial killer Thomas Wilder (Louis Cancelmi) attaches a message to his latest victim that taunts Danny, their deadly game of cat and mouse becomes personal for Danny.

Erin Reagan searches for a missing trial witness who is on the run because of fear of retaliation.

In the Season 6 finale, public outrage erupts when a cop isn't indicted for shooting a teenager, and the fallout affects Frank, the mayor and Erin's office. Later, an officer gets shot in a possible case of retaliation, so Danny searches for the shooter.

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 the son of Frank's most outspoken critic is murdered, Frank and the boy's father must put aside their differences to seek justice.

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 gang leader where the accused shooter is an ex-con romantically linked to his parole officer.

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.

Linda's brother gets in trouble with the mob and asks Danny to keep him safe.

Jamie and Eddie suspect foul play when the husband of a dying woman doesn't respond to her 911 call.

An ex-NYPD officer goes missing after telling Danny of her plans to make amends to the woman she and her partner wrongfully convicted.

Erin's ex-husband represents the person she's trying to convict of murder.

Erin helps a former witness shut down a drug operation in his apartment building.

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.

Danny contemplates retiring until Erin enlists him to help her with a case involving her ex-husband.

Danny and Baez investigate the reappearance of a runaway, who isn't quite who she seems. Frank battles with the mayor about a community parade that is honoring a once convicted cop bomber. Jamie and Eddy stumble upon a misleading congressman.

Erin's trial against a human trafficker is jeopardized when the presiding judge is found dead.

A detective in a mob case is killed. Garrett is accosted outside his home by a SWAT team after a false report. Erin is approached by an acquaintance of Anthony who offers to help in an organized crime case over Anthony's objections.

Cases of the week include (Frank) prison riots due to a social experiment the mayor is trying, (Jamie) an 18 year old that overdoses, and (Danny) a wife and mother found murdered in her home.

When a famous basketball player is found dead in his apartment of an apparent drug overdose, Danny looks into ties to old friends in a local gang. Erin is forced to re-examine the case of a man she convicted years ago who may be innocent.

Cases this week involve (Danny) a widowed nurse that is the victim of domestic violence, (Frank) a woman that alleges corruption at the jail, and (Jamie/Janko) an illegal alien that gives birth and lives in a condemned home.

Eddie's judgment is clouded by her past when she arrests a loathed college acquaintance; Frank is hesitant to mar the spotless record of a member of the force who tested positive for marijuana.

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.

Jamie and Eddie ask Erin to drop the 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.

When a journalist disappears while working on an exposé about an innocent man serving time for murder, Danny and Baez hope that re-examining the original case will help them find her.

Erin enlists Danny to find out who shot Anthony during an interview with a witness for an upcoming murder trial.

When Henry is the key witness on Danny and Baez's case, his meddling eventually leads them to valuable information. Nicky shocks the family by siding with an activist friend of hers. Jamie and Eddie learn a parole officer is taking advantage of his power.

A student is shot by a rival gang member in his high school courtyard. Danny and Baez try to prevent further violence. The principal recklessly takes matters into his own hands.

Danny considers taking a new job that would ease his financial struggles after investigating the death of a wealthy man.

A man living a double life with two separate families is murdered; Erin asks Anthony to help investigate his former partner; Frank deliberates between two candidates for the chief of transit position.

Danny forces his brother-in-law to help Baez take down the mobsters he's mixed up with; Frank suspects his old partner is guilty of a crime; Jamie is approached by an officer who wants help getting reassigned from his undercover assignment.

A woman voices outrage over her son's unsolved murder and Danny re-examines the case. Eddie is shot while on duty. Erin and her ex-husband face off in court. Frank deals with an angry police force after the mayor fails to defend it.

Danny and Baez race to find a girl who will die without her medication; Jamie and Eddie are on the wrong side of an investigation after engaging in a car chase; Sean wins an essay contest.

Danny is forced to ask his incarcerated arch enemy for help when a convict escapes from prison; Frank tries to talk Jamie to take the sergeant's exam; Erin's plan to go on a date with her ex-husband creates friction between her and Anthony.

Frank goes head-to-head with a data-tracking company when they refuse to unlock the phone of a terrorist that may hold information regarding upcoming targets.

Danny and Baez investigate a series of drive-by shootings they think may be connected to six wrongly convicted men who were just released from prison.

Danny takes a case involving a drug cartel member he believes set his house on fire; Erin is given a promotion but finds herself in a challenging situation when both Danny and Jamie ask her for help with their investigation.

Gormley tries to locate a former NYPD detective he believes may be a threat to Frank's safety; Erin navigates office politics when she chooses to reopen a closed case; Jamie is transferred to a new precinct with a lot of problems.

Danny investigates a case involving a woman who shot her husband while she was drunk; Anthony defies Erin's orders to drop an assault case; Frank holds an emergency drill for his inner circle.

When New York City experiences a major blackout, police officers scramble to contain the resulting chaos; Frank uncovers some unpleasant truths about his department; Jamie and Eddie question the line between work and their relationship.

Danny and Baez investigate a murder attempt of a celebrated fertility doctor with a seemingly pristine reputation; Eddie must intervene in a Regan family matter involving Danny's boys; Erin helps Anthony find justice after a date goes wrong.

Jamie clashes with Eddie and her new partner when they fail to intervene in a dispute at a convenience store; Danny and Baez investigate the death of a college freshman at a fraternity party; a sergeant accuses the department of reverse racism.

The drug cartel hitman responsible for torching Danny's house resurfaces. Also, an attack on an officer in the line of duty directly impacts a member of Frank's team; Eddie reluctantly introduces Jamie to her mother, Lena; and Erin deals with the consequences of her new role as boss.

Erin and Frank clash over a new policy from the district attorney's office that undermines Frank's policies; Erin is at odds with Governor Mendez over questionable sex-trafficking laws; Danny risks his badge to protect a friend from losing his.

When a video surfaces of cops being harassed by a group of people at a housing complex, Frank orders a raid to round up anyone with an outstanding warrant, against Garrett's advice.

A video surfaces of officers partaking in a clear case of entrapment; Frank searches for the leaker; Eddie retaliates against a co-worker who is pranking Jamie; Danny and Baez investigate the murder of a tabloid writer.

Frank questions whether a run-in with community activists was an accident or a setup; Jamie strives to rely less on Frank's input to make decisions; Erin helps Anthony protect his daughter and ex-wife from a dangerous psychiatric patient.

After a former officer waits on Frank at a restaurant, he feels guilty about the circumstances surrounding why she was fired, and he tries to reinstate her.

A medium claims to know what happened to a woman who was found dead of an apparent suicide; Jamie and Eddie help a woman who bought cheap insulin online that nearly killed her son; Frank goes after a man he thinks is laundering money from a charity.

Danny goes against a direct order during a hostage negotiation; Nicky asks Erin for help when her friend is in jeopardy of losing his scholarship because of a crime he didn't commit; Frank helps a distraught officer who accidentally shot a girl.

While off duty, Danny encounters a gas station robbery in progress and is forced to use his weapon, leaving him shaken and his family and co-workers concerned; Frank learns that a top officer in his department has a dark past.

After a woman is murdered in her apartment, Danny and Baez turn to her daughter for help, but instead she complicates the investigation; someone from Jamie and Eddie's past launches a smear campaign against them.

Frank's longtime friend Lenny reveals than an upcoming exposé will air some of the NYPD's dirty laundry; Erin must decide how to charge a doctor whose experimental treatments led to the death of his terminally ill daughter.

Frank considers implementing a fitness test after an officer has trouble keeping up with his partner; Danny is hesitant to pursue a cold case after learning who the original detective was; Anthony begs Erin to stall a trial.

After someone breaks into Luis Delgado's home and kills his wife, Luis and Danny team up to take down the vicious murderer who may also be responsible for Linda's death; Frank finally meets Eddie's mother; Jamie and Erin are at odds.

Erin must convince Frank to back a new state police bill of a bargain she made with Gov. Mendez; Danny and Baez pursue the same perp twice after the DA's office is unconvinced by their initial lineup; a cop killer comes up for parole.

DNA evidence in a murder case leads Danny and Baez to identical twins with identical alibis. Also, Frank learns Nicky is interviewing for a job at the Justice Coalition, and Jamie visits Eddie's father, Armin, in prison.

As Jamie and Eddie's wedding day approaches, Erin interviews a witness whose story leads her to doubt Eddie's honesty; Danny and Baez unravel the complicated love life of a young man who was murdered; Frank squabbles with the top brass.

Danny and Baez grapple with a homicide investigation brought to their attention by Maggie, the medium who previously helped them solve a case; Frank looks for a way to help his ex-partner Lenny Ross when Lenny's daughter gets arrested.

Frank and Erin are at odds when Frank learns the district attorney's office keeps a list of officers they consider unreliable; Danny and Baez recruit a retired mobster to assist in an investigation; a predator poses as a ride-share driver.

Frank's esteem for an old friend proves to be a mistake; Jamie asks Erin for help apprehending a perp who shot at him after learning she chose not to send him to prison six months ago; Eddie clashes with her new boss.

Frank takes one of Jamie's cases to heart when it involves the suspicious death of his friend's wife; Erin receives an unsolved robbery case that proves to be impossible to crack without help from Anthony.

Frank works to vindicate a detective accused of excessive force; Danny and Baez track down the killer responsible for the death of a rapper's bodyguard; Jamie is skeptical about a relationship between Espinoza and a rookie officer.

Frank is conflicted about how to deal with a former cop's gripe about his pension; Jamie helps a friend deal with illicit picture of his daughter on the internet; Anthony confronts the realization that his foster son isn't suited for police work.

Jamie and Frank oppose each other's viewpoints over the public's treatment of cops after rowdy teens pour water on two rookies; Danny and Baez investigate a man who preys on the elderly; Erin is forced to admit her wrongdoings.

Henry and Danny butt heads over a case involving a man who is volatile toward his wife; Frank is caught in the middle of an ongoing battle between the NYPD and FDNY; Erin ponders a life-changing opportunity.

Erin disagrees with a psychiatric consultant's diagnosis of a nanny accused of abuse; Eddie confronts her boss; Frank is forced to make staffing changes he is skeptical about; a woman claims she heard someone plotting a murder.

After a woman's body is found at a men's-only club, Danny and Baez investigate if her death was an accident; Frank hears about an illegal affair between the chief of Internal Affairs and the spouse of another member of law enforcement.

After an EMT is shot and killed, Danny and Baez work to determine who is behind a chain of ambulance robberies; Frank defends New York's homeless community after the mayor puts a new law in place.

A widow blames Frank for her husband's recent suicide; Eddie has a gut feeling about a murder; a desperate Luis Delgado wants protection for his sons.

Frank must uncover the truth when an undercover officer accuses a fellow cop of police brutality; Danny and Baez investigate the murder of a famous photographer recently accused of assault by his former models; Erin struggles to protect a witness.

Danny and Baez work with Texas Ranger Waylon Gates when they are part on a case to find the Lone Star Killer; after Eddie's partner mistakenly shoots an undercover cop, Internal Affairs accuses Jamie of not supervising properly.

Jamie is under investigation after his police vest is found on a perpetrator; Frank debates whether to help an old friend whose home was invaded; Danny and Baez investigate the suspicious circumstances surrounding the death of a hotel employee.

Frank and Garrett try to convince Mayor Chase to work better with others to properly run the city; Danny and Baez try to track down the person who vandalized several NYPD vehicles with anti-cop graffiti; Erin is shaken after a car accident.

Erin and Anthony trust a sociopath who claims he has evidence to convict a murderer; Frank faces backlash from his department when he suspends an officer for violent behavior; Danny and Baez try to arrest a notorious gangster.

Danny and Baez are faced with tracking down a drug dealer after two young models are found dead from overdoses; Eddie and Jamie team up to determine who the mastermind is behind a robbery.

After getting a match from an unknown relative from a DNA network, Sean Reagan does some detective work to figure out who this mystery person is; Frank gets a personal request from a woman (Bonnie Sommerville) to transfer her son to a safer assignment.

Frank struggles after Joe Hill's lineage as a Reagan is revealed; Erin and Anthony receive gift-wrapped evidence; Danny's opposition to authority clashes with Jamie's adherence to the rules, as both brothers work to solve a murder.

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.

Danny considers taking a new job that would ease his financial struggles after investigating the death of a wealthy man.

When Danny learns from Nicky that there's a deadly new brand of heroin hitting the streets, he begins an all-out manhunt for the distributor. Meanwhile, Frank pulls out all the stops to assist in getting the drugs off the street.

Four gorgeous women used in a local brothel admit to murdering their evil boss. Danny and Baez must figure out the real killer. Frank and his priest argue over mercy in the Catholic Church while Nicky Reagan-Boyle gets in drug trouble with her friends but no one takes the blame.

A reverend, the mayor and the police organize a gun buyback plan, with no questions asked. There, a gun used in a shooting at a chemist's is traded in. Danny investigates without being able to use the evidence from the buyback program.

Danny joins the search for two escaped convicts after learning that one is someone he helped wrongfully imprison.

When a video surfaces of cops being harassed by a group of people at a housing complex, Frank orders a raid to round up anyone with an outstanding warrant, against Garrett's advice.

When a young girl is tied up, gagged and held for ransom, Danny and Jackie place her drug-addicted boyfriend at the top of their suspect list. Meanwhile, Erin and her boss, Charles Rossellini, take their flirtatious banter a step further.

When serial killer Thomas Wilder (Louis Cancelmi) attaches a message to his latest victim that taunts Danny, their deadly game of cat and mouse becomes personal for Danny.

Erin enlists Danny to find out who shot Anthony during an interview with a witness for an upcoming murder trial.

Linda's brother gets in trouble with the mob and asks Danny to keep him safe.