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

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

W hen Blue Bloods ’ Danny Reagan (Donnie Wahlberg) moves to Boston in the CBS spinoff Boston Blue, he won’t be the only Reagan making the move. His youngest son Sean, who has been played by Andrew ...

Mika Amonsen has been cast as Sean Reagan on Boston Blue opposite Donnie Wahlberg. On Blue Bloods, Sean was played by Andrew ...

Mika Amonsen will play Sean Reagan in the 'Blue Bloods' spinoff, 'Boston Blue,' a role previously played by Andrew Terraciano ...

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

CBS' spinoff of 'Blue Bloods' titled 'Boston Blue' comes after the original show's fourteenth and final season ...