Mika Amonsen ( Thanksgiving) has joined the show’s cast as Sean Reagan, the youngest son of series lead Donnie Wahlberg’s ...

Mika Amonsen has joined the cast of CBS’ ‘Blue Bloods’ spinoff ‘Boston Blue,’ playing the younger son of Donnie Wahlberg’s character, Danny Reagan.

Danny Reagan’s youngest son Sean will look a little different when he appears alongside his dad on CBS’ upcoming drama series ...

Although “Boston Blue” is a direct offshoot of “Blue Bloods,” the Reagan family will look a bit different this time around.

Mika Amonsen will replace Andrew Terraciano, who played Sean Reagan throughout the 14-season run of "Blue Bloods." ...

CBS’s upcoming “Blue Bloods” spinoff has recast Danny Reagan’s son after the same actor played the recurring role throughout the original 14 seasons.

Throughout the 14 seasons of 'Blue Bloods,' through the series finale, the character was played by Andrew Terraciano.

Boston Blue made a shocking cast change for the role of Danny Reagan's son, Sean. Mika Amonsen was added to the cast of the ...

Andrew Terraciano will not return as Sean Reagan in the spinoff, and Mika Amonsen will now take his place in 'Boston Blue' ...

The Reagan family may be returning to screens for Boston Blue, but at least one member will look a little different. Ahead of ...

Boston Blue recasting Sean is a major change that is a good news/bad news situation for fans of the original Blue Bloods ...