After a young girl goes missing, the family argues whether Danny used questionable methods in order to bring her home safely. Meanwhile, Jamie graduates from the police academy and begins his new life as a cop
The Reagans weigh the rights and wrongs of vigilantism when a good Samaritan who has a police record takes action against a terrorizing subway criminal.
Erin, Frank and Danny work together within the system to find justice when a rape case's primary suspect is protected by diplomatic immunity
An off duty cop is found dead after a diamond heist and Frank gets the whole police force in gear to find the murderers.
The Reagans argue the pros and cons of profiling as Frank, Danny and the rest of the NYPD search for a bomb that is about to detonate in Manhattan.
Danny works to discover the source of a deadly narcotic after three teenagers die from a drug overdose.
When Erin tries to take down a gang leader using his law-abiding brother as bait, the family debates her methods.
After meeting with federal agents in a dark edge of Chinatown, Jamie witnesses a crime in progress and his suspect is killed while in pursuit. Now, Danny must solve the case in order for Jamie to avoid an Internal Affairs investigation.
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 hotspot 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 and Jackie investigate the murder of a high-end escort found floating in the river. Meanwhile, Frank vows to bring a killer to justice when a missing boy's remains are found from a case that he was emotionally invested in 25 years ago.
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.
When an undercover counter-terrorism agent is shot, Frank assigns Danny to the case because he is the only officer he can trust given the victim's involvement with infiltrating a sleeper cell; however, Danny is sworn to secrecy as to not disrupt the police activity in that cell
When a young girl is kidnapped 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.
When an unidentified young girl is found murdered at a debutante ball, Danny and Jackie look to the prostitute found giving her a hard time on the hotel's surveillance camera for clues. Meanwhile, Nicky gets a glimpse of her first murder victim as she rides along with Danny when he gets the call to investigate.
When a former U.S. Marine and war hero-turned-homeless man is found murdered, Danny, a former Marine himself, feels a personal connection and is determined to find the killer. Meanwhile, erroneous information about Frank running for mayor is leaked to the press.
While stopping at a Deli in Harlem after a lateshift, Danny is the eyewitness to a murder. Danny is able to identify the killer, Raymundo Salazar, a Peruvian drug lord. The victim, David Taylor, is simply a local school teacher but Danny learns was in a relationship with Salazar’s girlfriend Sylvia. Lyle Greene, the Special Narcotics Prosecutor tells Erin, Danny and Jackie Salazar has been difficult to prosecute, with limited evidence and a history of intimidating and killing witnesses. Danny is confident that he can take Salazar down with his testimony and has him brought into police custody. Given Salazar’s reputation, Danny has his family taken into police protection but Salazar’s men disguised as detectives pick up Linda at their home and kidnap her. With Linda now kidnapped, they attempt to stop Danny from testifying and he is determined to find her. After Sylvia’s dead body is found in one of Salazar’s vehicles, they are able to trace the tricked out car to a specific detailer who is able to give them information where the SUV was originally delivered. They raid the houses in Harlem crawling with Salazar's crew and Danny finds Linda, tied up in the basement and scared, but unharmed. Shortly thereafter, just as Greene is telling the court that Danny is a no-show, Danny enters the courtroom to testify. Frank and Baker arrest Lyle Greene after discovering evidence that he has been on Salazar’s payroll to keep him out of jail, until now.
When Linda's runway model niece and a reporter both 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 is shot outside a hip Lower East Side restaurant, the media sensationalizes the murder, much to Frank's frustration.
When a family down the street from the Reagans is murdered, their drug- and alcohol-addicted son is the prime suspect. Meanwhile, when Jamie's gun goes missing, he is convinced he's being set up for pursuing the Blue Templar.
When a drug bust points to dirty cops, Frank decides not to involve Internal Affairs in the hopes of taking down and exposing the Blue Templar.
When a supporter for the mayor elect is found dead, Frank is put on the spot. Tony Bennett and Carrie Underwood guest star.
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 three men attempt to rob a bank, Danny discovers that one of the perps happens to be a former cop. Meanwhile, Jamie works with a new partner, Luisa Sosa, on 'Bingo Bag' duty.
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 are injured by a church security team that refuses to let them enter a religious center in response to a 911 call.
Jackie goes undercover as an escort when she and Danny track down a serial killer who is murdering prostitutes in hotel rooms. Meanwhile, Erin meets a potential suitor at an art gallery who shares her interests.
Henry suffers a heart attack the day before Thanksgiving. Meanwhile, Danny investigates a young woman's suicide that may have been forced; and Frank and the mayor clash over a threat to the city.
Danny accompanies a dangerous ex-mobster who is helping him find bodies on cold cases in exchange for leniency for his son on grand theft auto. Meanwhile, Jamie works undercover in a boiler room operation, looking for a secret about the Sanfino family.
When Erin's informant is murdered, she blames herself and works to help Danny discover who killed him.
Danny and Jackie investigate a murder scene at a diner, where a witness claims a uniformed officer fled the scene after shots were fired.
On the way home with his family, Danny hits a man with his car who is fleeing from a gunman, and his family gets caught in the crossfire when Danny fires his weapon at the gunman. Frank deals with 9/11 guilt from impending loss of a friend whom he worked alongside at Ground Zero.
When a rich woman dies of a heart attack, her eccentric daughter claims that she received a message from God, who told her that her stepfather actually murdered her. Meanwhile, the archbishop wants Frank's support for the canonization of a local priest, but a reluctant Frank takes it upon himself to investigate a rumor that the priest went too far when protesting the Vietnam War.
When a man's family is robbed and beaten in front of him, and the assailant is shot and killed, the Reagan's debate about how far they would go to protect their family. Meanwhile, when a college student is arrested at a rally, Frank wrestles with her sentence due to her identity.
When a Reagan family friend, an undercover detective, is killed, Linda and the boys worry about Danny, as his relentless search for the killer takes a toll on his emotional state.
A high-profile reporter and close friend to Frank is nearly assaulted while she is out with him and Danny and Jackie search for the would-be attacker. Meanwhile, Jamie's undercover case comes to a critical stage.
As Erin prosecutes a woman accused of killing her husband, the defendant's attorney is murdered and Danny is assigned to the investigation. When Danny is put on the stand to be questioned, things get heated between the brother and sister.
Danny is put in a difficult position when a gun linked to a robbery is brought in to the NYPD's gun buyback program. He must decide to either arrest the suspect or follow the "no questions asked" rule.
Danny causes waves in the department when he investigates a closed case, the suicide of a firefighter, at the insistence of the man's 12-year-old son. Meanwhile, Jamie saves a baby from a burning building but worries it will jeopardize his undercover work when he is billed a hero in the press.
Danny and Jackie are assigned to protect a key witness in a Russian mob trial, but when an attempt is made on her life, they realize there is a leak on the task force. Meanwhile, Erin is offered a job as deputy mayor, which would have her working directly with her father
Danny and Jackie investigate the suspicious murder of a high rolling investor, who had injuries from a fight, but no marks on his hands. Meanwhile, Frank puts Jaime under house arrest, when the Sanfino family put out a hit on "Jimmy Reardon".
Frank must race to stop a biological weapon attack on New York City, while keeping it a secret from his family during their most sentimental holiday, Mother's Day. Meanwhile, a long-standing conflict between Danny and Jamie comes to a head.
A dangerous criminal from Danny's past comes back to seek revenge and kidnaps Jackie. Meanwhile, Jamie meets his new partner, while a young officer is shaken after he accidentally shoots an innocent man
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's. Meanwhile, Linda goes back to work, which causes upheaval for Danny.
Danny believes a serial killer is on the loose when two separate murder victims are identified as members of a group charged with a gang rape. Meanwhile, Erin's ex-husband, attorney Jack Boyle, resurfaces in her life as they face off in court.
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. Meanwhile, Jamie questions his partner Vinny's methods when he performs an unjustified stop.
Shortly after Frank awards a detective with the Medal of Valor for his undercover work for the NYPD in Malaysia, the detective is taken hostage by a Malaysian drug lord whose brother he helped put in prison. Meanwhile, Henry goes on a ride-along with Jamie and has a different method of getting the job done.
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. Meanwhile, Jamie and Vinny bust a drug operation.
When a knife-wielding attacker dressed as Baron Samedi, the Spirit of Death, stabs a man in costume on Halloween, Danny enters the world of voodoo. Meanwhile, DCPI Garrett opens up to Frank about a dark secret, and Erin and Nicky take Jack and Sean trick-or-treating
Danny arrives at a college campus to find a murdered student, who was thought to be dealing drugs. Meanwhile, Jamie has a life crisis when he reconnects with a former law school classmate and Erin must learn to give Nicky some freedom.
When Danny and Kate come up empty-handed with leads for a shooting, Linda helps make a break in the case when she overhears the victim telling his priest who is responsible. Meanwhile, Henry is mugged at an ATM, which sends Jamie into a rage as he tries to track down the assailant.
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. Meanwhile, a bicycle accident sends Danny's son Sean to the hospital with a life-threatening injury.
Jamie must deal with the emotional consequences of his actions on the job. Meanwhile, Erin questions Mayor Poole on the witness stand.
Danny is caught on the wrong side of the law when a bag of cocaine is found in his car trunk and he's taken into police custody. Meanwhile, the Reagans are eager to prove Danny's innocence.
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. Meanwhile, Frank must be diplomatic when dealing with a bigoted radio host who will be broadcasting from New York City.
Before a Hasidic Grand Rebbe passes away, he chooses his youngest son to succeed him. But when the new appointee dies suddenly, Danny investigates the oldest son and others within the Hasidic community. Meanwhile, Henry reveals a family secret to Frank.
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. Meanwhile, Frank navigates the politics of the State Department and the Turkish Government in order to help a young Turkish woman avoid persecution.
Erin and Danny investigate a cold case of a girl who was attacked by her rich and powerful boyfriend, who was never convicted. Meanwhile, Jamie’s friend brings a lawsuit against Danny’s friend after an injury at a pick-up basketball game.
When an off-duty cop tries to stop a bank robbery, he is disarmed by the "Bonnie and Clyde" robbers who take his gun and wound an innocent bystander. Meanwhile, Frank considers getting romantically involved with a woman from the ACLU who happens to be Erin's acquaintance
When the same tragedy occurs to people who don’t appear connected, Danny must find what they have in common and who is responsible. Meanwhile, Frank helps an old friend come to terms with his alcoholism.
When a devoutly religious young woman is found murdered in a cemetery, Danny questions her family who is shocked to learn that she had a secret relationship.
When two Wall Street brokers are killed in drug deals, Danny looks to question a wounded accomplice at the hospital but he is stopped by Linda, who won’t let Danny see him until after surgery. But when the accomplice dies during the procedure, Danny and Linda battle over the judgment call.
When Danny finds a disoriented man in a park covered in his girlfriend’s blood, he finds it hard to believe that the man has no recollection of the night’s events until they find a strong narcotic in his bloodstream. Meanwhile, Jamie gets into trouble when he helps an off-duty officer cover up his intoxication after he apprehended an armed robber.
When a young woman commits suicide, Danny is emotional since he promised to help her when her parents were taken from her. Meanwhile, the Reagans suffer a loss due to the project gangs
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. Meanwhile, Frank is left reeling from a second loss.
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. However, tensions run high in the Reagan household when Erin drops the charges and releases the suspect due to lack of evidence.
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
Danny becomes the lead hostage negotiator when a prime informant in a large drug case holds Erin at gunpoint inside the courtroom. Also, when Jamie disobeys his lieutenant's orders and gets suspended, Frank must decide a proper punishment
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. Meanwhile, Frank is annoyed at having to meet with the newly appointed Inspector General who will now have oversight of NYPD policy
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. Meanwhile, Frank pays a visit to a priest, a counselor to the NYPD, who was arrested on a DUI charge
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. Meanwhile, Danny and Baez investigate the murder of a Wall Street securities trader who was deep in debt due to a gambling addition
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 Baez investigate a local bombing, but meet 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
A new brand of deadly heroin hits the streets. Nicky tells Danny what he knows about the killer drug, prompting Nicky to track down the distributor. Frank helps out by trying to get as many of the drugs as possible off of the street.
When Frank is caught off-guard by a mother seeking justice for her murdered daughter he re-opens the case. A marine veteran displayed signs of suffering from Post-Traumatic Stress disorder goes missing and Danny and Baez try tracking him down.
A popular drag queen, Tiffany Lamp, who also appeared in a reality TV show is found murdered in a park, Danny and Baez try and find out who committed the crime. A man who has been accused of been involved in drugs case seems to be wrapped up. Until his mother kidnaps Erin and forces her to reexamine the entire case.
A young girl disappears after finishing school for the day, Danny adn Baez investigate. Danny remembers working on a similar case years ago that still remains unsolved. Frank and Inspector Peterson don't see eye to eye regarding information that Frank knows about overseas intelligence officers.
A woman who's threatening to not only kill herself but also the man who had killed her parents in a drunk driving accident calls in and Danny has to rush to find her. Frank goes on a field trip with his grandson Sean.
A expectant mother falls victim to a 'knockout game' and is punched in the head by a teenager. Danny and Baez investigate the case. Frank struggles when he is given the option of promoting someone as he's afraid he'll be accused of favoritism.
Danny and Baez investigate the death of a woman whose body was dumped after she was killed by a lethal dose of lidocaine following secret plastic surgery. Meanwhile, Frank privately assigns Jamie a cold case and Erin tries out speed dating
Danny and Baez 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 policeman is killed and Frank is determined to find the person responsible. Nicky turns to Jamie as she attempts to locate an ex-classmate living on the streets.
Danny works on a case that is off-limits and is then put on modified duty. He alerts Frank after discovering something major who does some digging.
Danny tries tracking down the drug cartel who's attacked a convoy of drugs been transported to be incinerated. Baez is left injured. Frank treads carefully.
Jamie stands up for a fellow officer, ostracized for testifying against their partner. Frank is given a difficult request by Boomer.