Boston Blue Recasts Sean Reagan for a Fresh Start in Boston
TV fans who’ve followed Blue Bloods for years might be in for a surprise: Sean Reagan is about to look a little different. After 14 seasons of Andrew Terraciano playing Danny Reagan’s youngest son, CBS’s new spinoff Boston Blue has cast Mika Amonsen in the role. It’s not just a face swap. Sean’s entire storyline is shifting—from family dinners in New York to walking the beat as a Boston PD patrol officer.
Swapping out a core cast member always makes waves among loyal viewers. But this recasting seems purposeful. In the original show, Sean’s older brother Jack left the NYPD dream and went off to medical school. Now, the spotlight is on Sean genuinely pursuing a law enforcement career, but not in New York. His move to Boston sets up a clean slate—not only for the character but for the wider world-building CBS seems to be aiming for with Boston Blue.
New City, New Family, and a Familiar Face Leading the Way
Donnie Wahlberg reprises his role as Danny Reagan, but this time he’s answering to the Boston PD, not the NYPD. Why the change of city? It traces back to Wahlberg’s own strong Boston roots, which CBS execs didn’t miss. The new setting naturally opens the door to fresh storylines while holding onto the essence of the Reagan family dynamic fans love. Wahlberg has promised that the connections to New York and the Reagans won’t disappear, even as the series carves out its own identity in a new city.
Boston Blue doesn’t just transfer familiar faces; it introduces new ones. The Silvers, a Boston police family, share the spotlight and expand the show’s procedural scope. This strategic move injects new energy, promising new clashes, alliances, and perhaps some rivalries to fill the void left by Blue Bloods’ long-standing cast chemistry.
Production is already underway, with sights set on a fall 2025 debut. Ernie Hudson—yes, the Ghostbusters legend—is on board in a vital supporting role, adding considerable star power to a cast already headlined by Wahlberg. It’s also worth mentioning that the series originally started as a separate concept about an LAPD cop’s move to Boston. But when producers saw the potential in combining Wahlberg’s signature character and a city so closely tied to his real-life persona, they shifted gears to what fans will now see in Boston Blue.
In the end, the decision to recast Sean Reagan isn’t about erasing the past, but setting up a new chapter. With Boston Blue, CBS bets that both hometown pride and new family drama will keep viewers tuning in, even as familiar traditions get a fresh Boston accent.
