Donnie Wahlberg's move from Blue Bloods to Boston Blue comes with a new onscreen partner - but what is there to know about Sonequa Martin-Green and her character, Lena? After a decade on CBS, Blue Bloods wrapped up in 2024. The network didn't take long to return to the fictional TV universe by centering Wahlberg's character, Danny, in a spinoff. The actor previously teased what he would like to see for Danny in this chapter of his career.