Danny tries to find the source of a deadly narcotic after three teenagers die from an overdose.

Frank, Baker, Garrett and Gormley experience guilt when an officer they briefly worked with is shot after Frank reassigned her for not meshing with their team; Anthony is offered a…

Frank causes family tension when he assigns Jamie to guard Danny after a hit is put on him; Frank tries to stop his grandson from seeking revenge after he’s attacked;…

The Reagans band together to prevent Joe Hill from being killed in the line of duty like his father when they fear Joe’s cover has been blown within the gunrunning…

The Reagans confront hard choices on the job when Frank deals with a police captain who’s losing his grip over his precinct, and Danny faces backlash from the Baez and…

Frank and Garrett devise a plan to convince Mayor Chase to work better with others in order to properly run the city, and Danny and Baez try to track down…

Frank is conflicted about how to deal with former cop Rick Austin’s gripe about his pension. Jamie helps a friend, Connor O’Brien, deal with illicit pictures of his daughter on…

After a woman is murdered in her apartment, Danny and Baez turn to her daughter, Margo, for help, but instead she complicates the investigation. Also, someone from Jamie and Eddie’s…

Danny and Baez investigate the murder of a man who was living a double life with two separate families, and Anthony tries to resist when Erin asks him to help…

When Linda’s brother, Jimmy (Kevin Dillon), gets into trouble with the mob, he begs Danny to help him stay safe until it blows over. Also, Frank faces a public relations…

When a key eyewitness in a murder trial flees out of fear of retaliation, Erin and Anthony spearhead their own two-person manhunt to find him and convince him to testify….

While hunting for a robbery crew on a wild crime spree, Danny and Baez partner with Detective Jimmy Mosley, a detective from another precinct who broke Baez’s heart years ago….

Linda needs Danny and Baez’s help after a co-worker has difficulties with an angry ex. Erin’s former mentor has been giving out unfair sentences following the death of his wife.

Jamie and Danny disagree about how to handle a reckless NYPD rookie, Marcus, who is the son of Danny’s friend. Also, when Erin’s investigator, Anthony, gets roped into a bad…

Frank and Danny work together to help Nick Constantine (Michael Nouri), a rehabilitated ex-con who Frank put away years ago, when Constantine becomes involved in the murder of an old…

When a local mobster is gunned down in his car, Danny and Baez try to get information from the mob’s low-level errand boy they find tied up in the trunk…

A respected, recently retired NYPD lieutenant is accused of shooting potential muggers on the subway; Baez and Danny try to arrest a drug dealer responsible for a murder Baez witnessed…

Several women take the credit for murdering the man they worked for. Frank and his priest fall out over the best way how to deal with a boy who has…

Erin finds it hard to deal with guilt after a man she set free is suspected of killing a policeman. Frank and Mayor Poole clash over Frank’s reappointment as commissioner.

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…

When Frank’s first partner announces plans to publish a book filled with stories of their early days on the force, Frank worries about his personal stories being made public. Also,…

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

When an emotionally distraught man holds Baez hostage at gunpoint in an interrogation room after she served him with a restraining order, Danny must try to meet his demands before…

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…

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…

When Frank’s close friend, a high-profile reporter, is almost assaulted while in town investigating a story, Danny and Jackie attempt to track down her would-be attacker. Meanwhile, Jamie’s undercover case…

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…

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…