With Blue Bloods wrapping up after more than a decade on CBS, fans were left wondering if the Reagan family’s law-and-order legacy would continue in some form. That answer came in the form of Boston Blue, an exciting new offshoot series that shifts the action from New York City to Boston while keeping the same gritty, character-driven storytelling that made the original a hit.
The series promises fresh faces, new conflicts, and the same deep focus on family, duty, and justice. But who exactly are the stars bringing this new chapter to life? Here’s everything you need to know about the Boston Blue cast.
1. Donnie Wahlberg as Danny Reagan
It wouldn’t be a Blue Bloods spinoff without a Reagan at the center. Donnie Wahlberg reprises his role as Detective Danny Reagan, this time taking his experience and grit to Boston on a special assignment that evolves into a permanent post. Danny serves as the connective tissue between the two series, ensuring fans feel at home while also allowing the show to branch into new territory. Wahlberg’s Boston roots make the move especially fitting, blending his real-life identity with his on-screen role.
2. Bridget Moynahan as Erin Reagan (Guest Star)
While not a series regular, Bridget Moynahan is set to make guest appearances as Erin Reagan, providing legal expertise and a familiar face for longtime fans. Her dynamic with Danny adds depth to the crossover potential, and her presence ties the spinoff more firmly to the Blue Bloods universe.
3. New Lead: Marcus Kane (Played by Michael Ely)
One of the major new additions to the Boston Blue lineup is Michael Ely as Marcus Kane, a seasoned Boston PD detective with a sharp mind and a no-nonsense approach. He clashes with Danny at first but quickly becomes his most trusted partner. Ely’s performance is expected to bring both gravitas and fresh energy to the series.
4. Kate Donnelly (Played by Grace Van Patten)
Grace Van Patten steps into the role of Kate Donnelly, a young detective eager to prove herself on the force. Ambitious, clever, and not afraid to challenge authority, Kate’s storyline promises to explore generational differences in policing. Her dynamic with Danny, both humorous and tense, will be a highlight of the show.
5. Captain Laura Martinez (Played by Selenis Leyva)
Known for her strong presence on Orange Is the New Black and Diary of a Future President, Selenis Leyva joins the cast as Captain Laura Martinez, the commanding officer of the Boston precinct. Balancing her responsibilities to the city with the internal drama of her team, she brings a commanding yet empathetic energy to the show.
6. Supporting Cast and Community Ties
In addition to the main players, Boston Blue will feature a strong ensemble of recurring characters — from community leaders to defense attorneys to Boston locals whose lives intersect with the officers’ work. This focus on the city itself as a “character” mirrors how Blue Bloods turned New York into more than just a backdrop.
What to Expect From Boston Blue
The new series aims to preserve the DNA of Blue Bloods — family dinners, moral dilemmas, and the balance between justice and personal life — while carving its own identity in Boston. Expect more focus on local politics, neighborhood tensions, and cases that reflect the unique culture of the city.
For fans, Boston Blue is both a continuation and a fresh start. With familiar faces like Donnie Wahlberg anchoring the story and an exciting new cast stepping into the spotlight, CBS appears confident that the spinoff can stand tall on its own while honoring the legacy of its predecessor.
