Furthermore, now that the show has been renewed for season 2, the door is open for more of our favorite Blue Bloods characters to return. Several prominent Blue Bloods characters made special cameos in season 1 of Boston Blue. Whether in Boston or New York, Boston Blue has the world at their fingertips when it comes to a Frank Reagan cameo. Regardless of the circumstances that would bring Frank to Boston Blue, season 2 would benefit greatly from his presence. Boston Blue season 2 will premiere on Friday, Oct. 9, 2026, at 10/9c on CBS.