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.
When Danny takes a call from a woman who is threatening to kill herself along with the man who killed her parents in a drunk driving accident, he rushes to find her. Meanwhile, Frank accompanies his grandson, Sean, on a class field trip and struggles to get the lead chaperone to loosen the reigns so the kids can have fun
Danny and Baez 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