CBS has officially greenlit Boston Blue, a Blue Bloods spin-off centered on Donnie Wahlberg ’s character, Danny Reagan, and his son Sean. However, longtime fans may be surprised to learn that Andrew Terraciano, who played Sean Reagan across all 14 seasons of the original series, won’t be reprising the role.

Boston Blue, a new series in the Blue Bloods universe, will feature Donnie Wahlberg as Detective Danny Reagan in Boston.