Family Business 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.
Domestic Disturbance 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.
Old Wounds 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.
Scorched Earth 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.
Risk And Reward 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.
Greener Grass 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.
Nightmares 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.
Higher Education 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.
Secrets And Lies 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.
Fathers And Sons When a radical environmentalist sends a message to motorists, Danny and Kate are put on the case. Meanwhile, a bicycle accident sends Danny's son Sean to the hospital with a serious injury.
Front Page News Jamie must deal with the emotional consequences of his actions on the job. Meanwhile, Erin questions Mayor Poole on the witness stand.
Framed When Danny's car matches an NYPD description of a vehicle involved in a drug deal, he is stopped and taken into custody when a bag of cocaine is found in his trunk. Meanwhile, the Reagans band together to come to his defense.
Inside Jobs 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.
Men In Black 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.
Warriors 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.
Quid Pro Quo 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.
Protest Too Much 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.
No Regrets 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.
Loss Of Faith 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.
Ends And Means 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.
Devil's Breath 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.
The Bitter End 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.
This Way Out 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.