
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.

An unknown assailant breaks into Erin's apartment; Eddie and Jamie find a pipe bomb in a woman's apartment; Frank investigates a charity soliciting a donation from the NYPD.

Eddie goes undercover to investigate a kidnapping ring that targets young women through fake hostel websites; a woman Frank met early in his career wants to meet the inmate who killed her family.

An investigative journalist refuses to give up a source, even when the source admits to committing murder; Danny works with a troubled teenager as part of a NYPD program intended to help troubled youth.

When a suspect confesses to murdering a celebrity chef, Baez and Danny don't believe him; a longtime friend's request for help puts Frank in a tough position.