For fourteen seasons, the Reagan family stood at the heart of CBS’s Blue Bloods, serving as both its moral compass and emotional core. More than a standard police procedural, the series became a multi-generational portrait of integrity, justice, and loyalty 
always grounded by the iconic Sunday Dinner that united police commissioners, detectives, patrol officers, and prosecutors under one roof.
With the original series now concluded and the new spin-off Boston Blue led by Donnie Wahlberg’s Detective Danny Reagan firmly taking shape, this is the perfect moment to revisit the Reagan family guide. Danny’s move from New York to Boston challenges the reach of the Reagan legacy, but his character still draws strength from the family he left behind. Understanding the roles, relationships, and sacrifices that defined the original clan enriches every storyline in the new Boston-based chapter.
Below is a complete breakdown of the key Reagan family members, their positions within the justice system, and how they connect to the expanding world of Boston Blue:
Henry Reagan (Len Cariou)
Role: Retired NYPD Police Commissioner; the family patriarch.
Frank Reagan (Tom Selleck)
Role: Current New York City Police Commissioner.
Danny Reagan (Donnie Wahlberg)
Role: Former NYPD Detective 1st Grade; now part of Boston’s Special Task Force and lead character of Boston Blue.
Erin Reagan (Bridget Moynahan)
Role: New York County Assistant District Attorney.
Jamie Reagan (Will Estes)
Role: NYPD Sergeant (and formerly a patrol officer).
Joe Reagan (deceased)
Role: Former NYPD Detective in the Warrants Squad.
Sean Reagan (Mika Amonsen; previously Andrew Terraciano)
Role: Boston Police Department Patrol Officer and a main cast member of Boston Blue.
Jack Reagan (Tony Terraciano)
Role: Danny’s eldest son.
Joe Hill (Will Hochman)
Role: NYPD Detective; Frank’s grandson through his late son Joe Reagan.
The transition to Boston Blue is more than a geographic shift it’s a test of the Reagan family’s unity across state lines. In Boston, Danny and Sean are now intertwined with the Silver family, a powerful law-enforcement dynasty headed by a District Attorney and a Police Superintendent. In many ways, they serve as Boston’s counterpart to the Reagans.
Through Danny and Sean’s new roles and with Frank, Erin, and other Reagans appearing strategically the spin-off preserves the themes of service, honor, and family that defined Blue Bloods. It proves that the Reagan legacy isn’t confined to New York. It endures wherever a Reagan steps forward to uphold justice.