Donnie Wahlberg has revealed that another former “Blue Bloods” actor will reprise his role on the spinoff show “Boston Blue” — but it’s not Tom Selleck. 8 Donnie Wahlberg as Danny Reagan in “Boston Blue.” CBS via Getty Images8 Danny Reagan (Donnie Wahlberg), and Henry Reagan (Len Cariou) on “Blue Bloods.” CBSFellow “Blue Bloods” alum Bridget Moynahan, who played Danny’s sister, Erin, will also appear in the seventeenth episode, after initially appearing in the pilot. “Blue Bloods” aired on CBS for 14 seasons from 2010 to 2024. “Boston Blue” (airing Fridays at 10 p.m. on CBS) follows Danny as he takes a position in the Boston Police Department. “We love Andrew and the work he did over the years on Blue Bloods,” co-showrunner Brandon Margolis told Variety.