Mika Amonsen has been cast as a series regular opposite Donnie Wahlberg on the Blue Bloods offshoot, taking over the role of Sean Reagan. On Blue Bloods, Sean was played by Andrew ...

Andrew Terraciano portrayed Sean in 292 of the 293 episodes of “Blue Bloods.” Per CBS, in the new series, Sean has “relocated to Boston to start a new chapter as a Boston PD patrolman.

Sean is set to appear in the first spinoff of the show after it ended last year, but Terraciano is not returning to the role ...