All 20 episodes from the 12th season of the US drama following a family of New York cops headed by Frank Reagan (Tom Selleck). As well as the head of the family, Frank is the New York City Police Commissioner, following in the footsteps of his father. Frank's children also share his passion for law and order: Danny (Donnie Wahlberg) is an NYC detective, Erin (Bridget Moynahan) works in the District Attorney's office and Frank's youngest son Jamie (Will Estes) works undercover. This season finds Frank locking horns with the city mayor (Dylan Walsh) over ways to combat the increase in crime following a shooting. Meanwhile, Frank's rule-pushing detective son Danny investigates a series of crimes with his partner Maria (Marisa Ramirez). The episodes are: 'Hate Is Hate', 'Times Like These', 'Protective Instincts', 'True Blue', 'Good Intentions', 'Be Smart Or Be Dead', 'USA Today', 'Reality Check', 'Firewall', 'Old Friends', 'On the Arm', 'The Reagan Way', 'Cold Comfort', 'Allegiance', 'Where We Stand', 'Guilt', 'Hidden Motive', 'Long Lost', 'Tangled Up in Blue' and 'Silver Linings'.