Tom Selleck stars as Frank Reagan, the New York Police Commissioner and patriarch of the Reagan clan, a multigenerational family of cops. Frank's oldest son is Danny, a seasoned detective and Iraqi War veteran who occasionally uses dubious tactics to solve cases. Daughter Erin, the lone female, is an assistant district attorney. Fresh out of Harvard Law, Jamie is the youngest member and "golden boy" of the family. Jamie gave up a lucrative future in law to continue the family's tradition in police work, and is asked to participate in a secretive investigation that even his father does not know about.
Baez is injured while escorting confiscated drugs - Danny goes after the drug cartel responsible. A lieutenant with a commendable record engages in controversial behaviour, putting Frank in a trick...
Jamie stands up for an officer who is harassed for testifying against her partner. Danny asks Erin to file murder charges against a man who shot a 15-year-old girl eight years ago.
Danny and Baez are temporarily assigned new partners when an officer is outed and his current partner won't ride with him. Jamie and Eddie work on a revenge mission to steal a collar from a pompous...
When Danny Reagan is accused of police brutality, Frank has to walk a fine line in the investigation to find the truth. Jamie meets a female doctor, and it makes Janko uneasy.
A woman's abusive boyfriend targets Jamie after he intercedes in a domestic dispute. The press get ahold of an illegal tape capturing Henry's insensitive comments.
Danny and Frank will join forces to put an international criminal behind bars for good.
Frank is taken by surprise during an on-air interview with Erin's boss. Danny and his new boss clash as they investigate a drive-by shooting. Jamie and Jenko help detectives with an apparent suicide.
Frank faces public backlash after an officer's body camera malfunctions during an altercation with a civilian.
When three community leaders are killed, they appear to be victims of hate crimes; and, after being mugged, Linda decides to carry a gun.
Frank pushes to find evidence against a suspected killer who shot one of Henry's fellow officers years ago. Danny and Baez investigate a string of murders involving adult film stars.
When a group of highly trained army veterans robs a bank, Danny feels conflicted. And a street artist is responsible for a bomb scare.
Jamie gets Danny involved when he finds a homeless teen who claims his aunt was killed by her boyfriend.
When a homeowner shoots an intruder, Danny and Maria's investigation finds the intruder is a hitman.
Danny and Baez look into the murder of a lower income resident living in a luxury building. Frank disagrees with a detective friend of Gormleys.
A mob informant returns to the city to testify in a case for Erin, and Danny and Baez are tasked with protecting him.
Baez is held hostage in an interrogation room by a distressed man who wants to see his daughter.
Erin is unnerved when someone breaks into her apartment, and then she discovers her coworker was attacked. Jamie and Eddie find a pipe bomb in a halfway house for addicts.
Eddie goes undercover for the first time when she tries to take down a kidnapping ring, which is luring in young women with websites for phony youth hostels.
An investigative journalist refuses to give up a source who admitted to committing murder.
A celebrity chef is murdered and a suspect readily confesses to the crime, but Danny and Baez think there is more to the case.
When NYPD Deputy Chief Donald Kent and his wife are gunned down in an apparent gang hit, Frank orders the whole department to scour the city for his friend's killer.
One of the Reagans is shot by a gang member, and Danny pursues a suspect while trying to keep his emotions in check.