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

Like for instance that Sean Reagan has been recast. Mika Amonsen will be taking over the role that originated on Blue Bloods with Andrew Terraciano.

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

Danny Reagan’s youngest son Sean will look a little different when he appears alongside his dad on CBS’ upcoming drama series Boston Blue. Mika Amonsen has been cast as a series regular ...

Although “Boston Blue” is a direct offshoot of “Blue Bloods,” the Reagan family will look a bit different this time around. Mika Amonsen has joined the CBS drama in a series regular role ...

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