'Boston Blue' Just Recast a Key Figure From Danny's Past — and It Could Change Everything

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.