The final curtain may have fallen on the Reagan family’s iconic Sunday dinners in New York City, but the Blue Bloods universe is far from finished. CBS has officially expanded the franchise with the highly anticipated spinoff, ‘Boston Blue’, which sees the relocation of fan-favorite detective Danny Reagan (Donnie Wahlberg) to the Massachusetts capital.
The new series promises to maintain the procedural drama and family dynamic that defined its predecessor, but with a fresh Bostonian grit and an impressive ensemble cast. Headlining the new chapter are returning Blue Bloods alums and a powerful new family—the Silvers—a prominent Boston law enforcement and political dynasty.
Here is your essential guide to the main cast of ‘Boston Blue’, featuring the returning faces and the powerhouse new actors set to define the next generation of CBS police drama.
The Returning Reagan: Donnie Wahlberg
Detective Danny Reagan (Donnie Wahlberg)
The undisputed center of the new series is Donnie Wahlberg, reprising his role as the hotheaded, instinct-driven Detective Danny Reagan. After 14 seasons navigating the streets of New York as a dedicated NYPD detective, Danny finds himself in a new city and a new police department, forcing him to adapt to unfamiliar politics and different policing styles.
Wahlberg, himself a Boston native, was reportedly instrumental in pushing for the show to center on his character’s return to his real-life hometown, promising fans that the new series will maintain the “connective tissue” to the Reagan family’s legacy.
The move follows the character’s journey as a widower and father of now-adult sons, setting the stage for emotional new narratives while maintaining Danny’s signature mix of relentless justice and rule-bending flair.
The Silver Family: Boston’s New Law Enforcement Dynasty
While the Reagan family represents the old guard of the NYPD, the Silvers are the new, complex family at the heart of ‘Boston Blue’. They are an influential multi-generational, multiracial family deeply embedded in the city’s law enforcement and legal structures, mirroring the Reagans’ mix of police, legal, and community power.
Detective Lena Silver (Sonequa Martin-Green)
Played by: Sonequa Martin-Green (Known for: Star Trek: Discovery, The Walking Dead)
Lena Silver is Danny Reagan’s new partner at the Boston Police Department (BPD). Described as a “rising star” within the BPD, Lena is the eldest daughter of the Silver family.
- The Dynamic: Lena is sharp, by-the-book, and politically astute, placing her in immediate, yet complementary, friction with Danny’s reckless New York style. Her character serves as the anchor to Boston’s institutional side, forcing Danny to confront the local reality. Martin-Green brings a powerful screen presence, setting her up as the co-lead who must bridge the gap between Danny’s experience and the Silver family’s expectations.
District Attorney Mae Silver (Gloria Reuben)
Played by: Gloria Reuben (Known for: ER, Mr. Robot)
Mae Silver is the matriarch of the Silver family and holds the powerful position of Boston’s District Attorney.
- The Role: Mae is positioned as the new series’ equivalent to a combination of Frank Reagan and Erin Reagan. She commands immense legal authority and political influence, making her the family member most likely to clash with Danny’s street-level methods. Her presence ensures the show retains the crucial police vs. prosecutor conflict dynamic that was a staple of Blue Bloods. She is the proud mother of Lena and Jonah.
Reverend Edwin Peters (Ernie Hudson)
Played by: Ernie Hudson (Known for: Ghostbusters, Grace and Frankie)
Reverend Edwin Peters is the family patriarch and a revered pastor at a historic Baptist church in Boston. He is the father of Mae Silver.
- The Role: Peters serves as the family’s moral and spiritual anchor, a role reminiscent of Henry Reagan (Len Cariou). His influence extends beyond the church into the community, often providing a necessary, objective voice of wisdom in the family’s highly pressured, high-stakes lives. Hudson’s casting injects veteran gravitas and warmth into the new family dynamic.
Superintendent Sarah Silver (Maggie Lawson)
Played by: Maggie Lawson (Known for: Psych, Lethal Weapon)
Sarah Silver is Lena’s step-sister and a Superintendent within the Boston Police Department.
- The Role: As a high-ranking officer, Sarah will be another source of institutional pressure on Danny and Lena. Her position places her in the challenging space between supporting her family members on the force (Lena and Jonah) and maintaining the department’s public image and adherence to policy.
Rookie Patrol Officer Jonah Silver (Marcus Scribner)
Played by: Marcus Scribner (Known for: Black-ish, Grown-ish)
Jonah Silver is the youngest member of the Silver family, serving as a rookie patrol cop. He is the son of Mae Silver and Lena’s younger brother.
- The Role: Jonah’s character is expected to take on the Jamie Reagan role from the original series, providing a window into the challenges, idealism, and ethical dilemmas faced by officers on the beat. His youth and lack of experience will offer a stark contrast to Danny’s hardened veteran status.
More Blue Bloods Alums & The Next Reagan Generation
While the Silver family dominates the new cast, the threads connecting to the New York-based Reagans remain strong, ensuring the ‘Boston Blue’ maintains its “universe expansion” status.
Sean Reagan (Mika Amonsen)
Played by: Mika Amonsen (Recasting the role previously played by Andrew Terraciano)
Danny’s youngest son, Sean Reagan, makes the move to Boston with his father and is now portrayed by Mika Amonsen.
- The Shift: In a major narrative development, Sean is not just in college; he is now following the family tradition, starting his own career as a rookie cop with the BPD. This parallel storyline sees both father and son—Danny as the veteran and Sean as the newcomer—navigating new careers in a new city, providing a built-in family conflict and support system.
Special Guest: Erin Reagan (Bridget Moynahan)
While not a series regular, Bridget Moynahan is confirmed to reprise her role as Erin Reagan, Danny’s sister and a New York County Assistant District Attorney, in a special guest capacity. Moynahan is also slated to direct an episode of the new series.
- The Connection: Erin’s involvement ensures that the core Reagan family drama—particularly the professional conflicts between police and prosecutors—will occasionally cross state lines. Her appearance will likely involve a cross-jurisdictional case or a major family crisis, satisfying long-time fans who want to see the Reagans together again.
Why ‘Boston Blue’ is the Must-Watch Spinoff
‘Boston Blue’ is more than just a continuation of Danny Reagan’s story; it is a meticulously cast reboot that swaps the political legacy of the Reagans for the contemporary, interwoven power of the Silvers.
With Donnie Wahlberg’s dependable lead and the immediate introduction of a powerful, seasoned supporting cast—including Martin-Green, Hudson, and Lawson—the show is set to deliver the family drama and procedural intensity that audiences crave. By establishing a new law enforcement family with political and community ties, ‘Boston Blue’ is strategically positioned to build its own legacy while honoring the grit and heart of its Blue Bloods heritage. The legacy is safe, and a new city is ready to see justice served.
