Boston Blue’ Recasts a Pivotal ‘Blue Bloods’ Role in Surprising Shake Up

The Reagan family has acquired a new member — just not in the way we were expecting. On the heels of Donnie Wahlberg’s announcement that table reads had begun for his Blue Bloods spin-off, Boston Blue, it’s been revealed that his character’s son has been recast. When the CBS procedural arrives on screens this fall, Danny Reagan’s (Wahlberg) son, Sean, will be played by Mika Amonsen (Thanksgiving). Andrew Terraciano previously appeared as the child of Detective Danny Reagan during the original show’s 14-season run, but, according to Deadline, the creative team decided to go in a different direction for the next chapter. That different direction will see Sean following in the family’s footsteps and seeking out a career in law enforcement.

When audiences pick up with Sean, he’ll have relocated right alongside his father to Boston. It’s there that he’ll join the city’s police department as a patrolman. For Sean, his decision to move north was all about getting a fresh start and breaking out from the stamp already left in New York by his family. With his father there, Sean will have the chance to grow closer to one another through both ways of father-son bonding and working hard at the career they both love. Right now, Sean is the only character from the original series set to be part of Boston Blue, but Wahlberg has made it clear that other Reagans will more than likely swing by as Danny and Sean plant their roots outside of New York City.