Tom Selleck stars as Frank Reagan, the New York Chief of Police. Frank's eldest son Danny is a seasoned detective, family man, and Iraqi War vet who on occasion uses dubious tactics to solve cases.
Erin, Frank and Danny work together within the system to find justice when a rape case's primary suspect is protected by diplomatic immunity.
Frank mobilizes the entire NYPD to find the killer of an off-duty police officer who was murdered during a diamond heist.
Danny works to discover the source of a deadly narcotic after three teenagers die from a drug overdose.
When Erin tries to take down a gang leader using his law-abiding brother as bait, the family debates her methods.
