Blue Bloods may have ended its storied run, but the Reagan legacy is far from over. With Donnie Wahlberg reprising his role as Detective Danny Reagan in the new CBS spinoff, Boston Blue, the conversation has officially shifted from the iconic Sunday family dinner to the chilly, complex streets of Beantown. Danny has a new city, a new partner, and a whole new set of challenges, but for fans, one burning question remains: Which character from the original Reagan family is most likely—and most desired—to make a cameo?
While Danny’s son Sean has already made the move with him, the rest of the Reagan clan is a phone call and a quick trip up I-95 away. A crossover episode would not only be a ratings smash but also a deeply satisfying nod to the fans who have followed this family for over a decade. But not all cameos are created equal. Let’s break down which of the most beloved Blue Bloods characters we want to see ship up to Boston, and why one of them is a perfect fit.
The Case for the Commissioner: Frank Reagan
A visit from NYPD Commissioner Frank Reagan is the most obvious and powerful choice. As the patriarch of the Reagan family and the ultimate arbiter of law and order, his presence would immediately lend weight and gravitas to the new series. The narrative possibilities are endless.
Imagine a high-profile case that crosses state lines, forcing the BPD and NYPD to collaborate. Frank could make the trip to Boston for a press conference or a strategic meeting with the Boston Police Commissioner. We’d get to see a classic Frank Reagan press conference, full of measured words and stoic determination. However, the true gold would be a quiet, private scene between father and son. A moment where Frank, ever the father first and commissioner second, checks in on Danny, perhaps over coffee instead of at the Reagan dinner table. The quiet intensity of Tom Selleck’s performance would ground the new series, reassuring fans that while the location has changed, the core family values remain.
The Commissioner’s presence would be more than just a fleeting appearance; it would be a symbolic passing of the torch. It would show the audience that even though Danny is in a new city, he still has the unwavering support and counsel of his father. A cameo by Frank Reagan would be the ultimate stamp of approval for Boston Blue, telling viewers this is a legitimate continuation of the Blue Bloods universe. It’s a powerful option, but perhaps too powerful. Frank’s commanding presence might overshadow Danny’s new life, and the focus of Boston Blue is to establish its own identity.
The Case for the DA: Erin Reagan
If the series is looking for a more subtle but equally impactful legal crossover, then Assistant District Attorney Erin Reagan is the perfect choice. Erin’s legal expertise and sharp wit could be instrumental in a case with complex legal or jurisdictional issues. A high-stakes prosecution that extends from New York into Boston would provide a natural and organic reason for her to appear.
Picture this: Danny and his new partner are investigating a criminal syndicate operating in both cities, and the BPD needs help from the New York District Attorney’s office. Erin could arrive in a flurry of papers and sharp dialogue, providing the legal muscle the Boston team needs. Her interaction with Danny would be a delightful mix of professional collaboration and familial banter. We could see the classic Reagan sibling dynamic play out, with Erin trying to rein in Danny’s more aggressive tactics while he pushes back, arguing for his gut instinct over legal procedure. It would be a perfect blend of crime drama and family tension.
Furthermore, an Erin cameo could introduce a new layer of character development for Danny. He’s used to his sister’s legal scolding; how would he handle it in a professional, public setting? It would challenge his new relationships with his Boston colleagues while reaffirming the strength of his family ties. While a fantastic choice, an Erin cameo feels like a logical step down the line, perhaps in a later season when the show is more established.
The Case for the Beat Cop: Jamie Reagan
While Frank and Erin bring big-city power and legal clout, the most compelling and narratively satisfying cameo would come from the youngest Reagan son, Sergeant Jamie Reagan. Jamie represents the street-level, boots-on-the-ground reality of police work that defines so much of the Blue Bloods universe. His journey from beat cop to patrol sergeant makes him the perfect character to bridge the gap between New York and Boston.
A Jamie cameo wouldn’t need a high-stakes, international conspiracy. It could be as simple as a joint training exercise between the NYPD and BPD, or a special assignment on a task force. This would provide a natural and logical reason for Jamie to be in Boston. The true value, however, lies in his relationship with his brother. Danny and Jamie have always had a unique, respectful bond. Danny, the seasoned detective, sees Jamie’s potential and intelligence, while Jamie, the rule-follower, admires Danny’s drive and intuition.
A scene with the two of them, perhaps grabbing a beer after their shift, would be incredibly poignant. It would give Danny a chance to vent about his new life, his new partner, and the challenges of starting over, all with someone who truly understands. Jamie could offer him quiet, thoughtful advice—a rare moment for Danny to be the one on the receiving end of a pep talk. This interaction would remind the audience that despite his new surroundings, Danny is still a Reagan at his core. The cameo would not just be a fun nod to the past, but a crucial piece of character development for Danny as he navigates his new professional and personal life.
Jamie’s presence would be the most relatable and grounding. It wouldn’t just be a high-powered meeting; it would be a moment of genuine brotherhood. It would feel like a true continuation of the family bond that has been the bedrock of the entire franchise.
Conclusion: And the Winner Is…
While a cameo from Frank Reagan would be a huge event and an appearance from Erin would offer a fantastic legal twist, the most desired and narratively resonant cameo for Boston Blue is undoubtedly Jamie Reagan.
His journey from being a rookie to a sergeant, and his close yet distinct relationship with Danny, makes him the ideal choice to showcase the enduring strength of the Reagan family. He wouldn’t just be a guest star; he would be a vital piece of Danny’s emotional journey. He represents the kind of subtle, powerful storytelling that made Blue Bloods a fan favorite for so many years. A Jamie cameo would be a heartfelt reminder that no matter where the Reagan family goes, their bond is what truly defines them.
