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.
Bo tracks down an old foe who has taken on a new form.
Henley Boone moves to a seemingly idyllic town just as a shocking murder occurs; Tommy, a deputy and son of a popular sheriff, tries to ease the town's fears and solve the crime.
While the townspeople mourn the passing of Big Dave Duncan, Merritt and Henley scheme to take back the mysterious hammer that is once again in Peggy Haplin's possession.
The interrogation of John Haplin about missing Lauryn Ward intensifies; Tommy views the future of his relationship with Big Dave anxiously after having a nightmare.