Donnie Wahlberg confirmed that another Blue Bloods alum is set to appear on Boston Blue after the show recast one of the former cast members. Blue Bloods might be over but CBS has since expanded the universe with Boston Blue — but which characters are reprising their roles in the spinoff? (The role of Sean, meanwhile, was played by Andrew Terraciano in Blue Bloods before Mika Amonsen took over in Boston Blue.) Speculation arose in 2023 that Blue Bloods was coming to an end. The CBS series follows the lives of the Reagan family helmed by Tom Selleck’s Commissioner Frank Reagan.