Episode 1 : Family Business
A dangerous criminal from Danny's past comes back to seek revenge and kidnaps Jackie. Meanwhile, Jaime meets his new partner, while a young officer is shaken after he accidentally shoots an innocent man. Michael Madsen and Corbin Bleu guest stars.
Episode 2 : 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 happens to be a friend of Frank's. Meanwhile, Linda goes back to work, which causes upheaval for Danny. Richard Burgi guest stars.
Episode 3 : 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 gang rape. Meanwhile Erin's ex-husband, attorney Jack Boyle, resurfaces in her life as they face off in court. Peter Hermann guest stars.
Episode 4 : Scorched Earth
Danny and Jackie set out to investigate the murder of a bride on her wedding day in a drive-by shooting. However, they are pulled off the case and is assigned to the protection detail of a Central American president, who they believe is the target for assassination. Meanwhile, Jaime questions his partner Vinny's methods when he performs an unjustified stop.
Episode 5 : 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 Jaime and has a different method of getting the job done. Michelle Hurd guest stars.
Episode 6 : Greener Grass
When Erin's key witness, an infamous photographer, is nearly killed in a hit and run, she arranges Danny to work protection detail to safeguard him. Meanwhile, Jaime and Vinny bust a drug operation.
Episode 7 : 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.
Episode 8 : 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.
Episode 9 : 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. Chazz Palminteri and John Ventimiglia guest star.
Episode 10 : Fathers and Sons
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.
Episode 11 : 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. Susie Essman guest stars.
Episode 12 : 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.
Episode 13 : 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. Mary Elizabeth Mastrantonio and Mark Moses guest star.
Episode 14 : 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.
Episode 15 : 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.
Episode 16 : 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. Eric Mabius guest stars as Richard Rorke.
Episode 18 : 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.
Episode 20 : Ends & 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.
Episode 23 : 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.