
Variety recently revealed a major piece of casting news for the upcoming Blue Bloods continuation, Boston Blue, that could dramatically alter the fabric of the new series. The role of Sean Reagan, the youngest son of Danny Reagan (Donnie Wahlberg), has been recast. Mika Amonsen now officially takes over the role of Sean, replacing Andrew Terraciano, who portrayed Sean in Blue Bloods across nearly 300 episodes! Furthermore, the casting news of Amonsen as Sean Regan comes along with additional plot details for Boston Blue that could dramatically alter the direction of the upcoming spin-off. It’s time to unpack the new information regarding the next chapter in the saga, Boston Blue.
Sean Reagan’s Casting Change in ‘Boston Blue’ Is Important

It seems the reason Sean opted to become a police officer in Boston is that he wanted to start his career on his own terms by joining a department outside his hometown of New York. Danny partially decides to move to Boston because he wants to reconnect with his son on a deeper level. Sean’s new career as a patrolman is a rather astounding development for the Blue Bloods continuation, as the initial synopsis and story materials for the show did not indicate that Danny’s decision to relocate to Boston had anything to do with Sean already living there. The twist suggests that something happened between the father and son that Danny wants to fix, leading to the dramatic change of setting.