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.

Danny, Erin and Frank work together to seek justice when the main suspect in a rape case is protected by diplomatic immunity.

The entire NYPD is mobilized to find the killer of an off-duty police officer murdered during a diamond heist.

When Erin tries to take down a gang leader using his law-abiding brother as bait, the family debates her methods.

After meeting with federal agents in a dark edge of Chinatown, Jamie witnesses a crime in progress and his suspect is killed while in pursuit. Now, Danny must solve the case in order for Jamie to avoid an Internal Affairs investigation.