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

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

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

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."Though ...

The forthcoming CBS procedural Boston Blue may be a spin-off from Blue Bloods, but it's still making a distinct departure ...

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.

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.

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

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 ...

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