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.

The Reagans weigh the rights and wrongs of vigilantism when a good Samaritan who has a police record takes action against a terrorizing subway criminal.

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.

The Reagans argue the pros and cons of profiling as Frank, Danny and the rest of the NYPD search for a bomb that is about to detonate in Manhattan.

Danny works to discover the source of a deadly narcotic after three teenagers die from a drug overdose.