Boston Blue has been one of the most talked-about new TV dramas of late 2025, but not always for the reasons the creators hoped. What was expected to be a smooth continuation of the beloved Blue Bloods legacy has instead ignited passionate discussion online and among critics — from controversial casting choices to audience backlash and the weight of big expectations.
One of the biggest flashpoints has been the recasting of Sean Reagan. In Blue Bloods, Sean — Danny Reagan’s younger son — was played for years by Andrew Terraciano. In Boston Blue, the role was recast with Mika Amonsen, which has fueled debate among viewers about continuity versus creative rebooting. Showrunners have defended the choice, saying the spin-off was intended to explore “a new chapter” in the character’s life with a different energy and direction.
But that wasn’t the only controversy. Online fan discussions reveal that many viewers are frustrated with the show’s writing and tone. From criticism of its dialogue and pacing to fans claiming that Boston Blue leans too hard into political themes or mimics Blue Bloods without fully capturing its emotional depth, the response has been mixed — with some fans openly disappointed and even calling parts of the show “contrived.”
At the same time, the series has earned enough attention — and viewers — to secure a second season renewal from CBS, proving that controversy has not torpedoed its audience entirely. While critics have given Boston Blue generally favorable early reviews, audience scores show a more polarized reaction, suggesting a disconnect between what longtime fans expected and what the show delivers.
Amid all this, Boston Blue has also teased exciting developments: longtime Blue Bloods cast member Len Cariou is confirmed to guest-star, and other familiar faces are crossing over, stirring anticipation and curiosity about how the Reagan legacy will evolve outside New York.
So the real question fans are debating now is:
Is Boston Blue carving out its own identity — or struggling to step out of its predecessor’s shadow?
The divide between critics and viewers may be the biggest storyline of all.